FBI Issues Urgent Warning | Stop Using Online File Converters – A Growing Cyber Threat for Chrome, Edge, and Safari Users

Table of Contents

• What is the FBI Warning About?
• How Do Malicious File Converters Work?
• List of Malicious File Converter Websites Identified
• How Are These Malicious Websites Used in Cyber Attacks?
• How to Protect Yourself from These Attacks?
• Why This Threat Matters
• Conclusion
• Frequently Asked Questions (FAQs)

Cybersecurity threats are evolving rapidly, and the FBI has recently issued a critical warning for Google Chrome, Microsoft Edge, and Apple Safari users. The warning highlights a growing cyber threat in which free online document converters are being used to distribute malware, leading to ransomware infections, data theft, and unauthorized system access.

In this blog, we will explore the details of this FBI alert, how these malicious websites operate, the risks involved, and what users can do to protect themselves.

What is the FBI Warning About?

The FBI has confirmed that malicious file converter websites are being used to distribute malware. These websites mimic legitimate services but instead infect users’ devices. Cybercriminals create these fake converter tools with slightly altered URLs to make them appear authentic.

Many people search for free tools online to convert PDFs, images, or MP3 files. However, the FBI has warned that these sites are being leveraged to push malware onto victims' computers, which can lead to:

• Ransomware attacks

• Credential theft

• Data breaches

• Unauthorized access to sensitive files

  
  

How Do Malicious File Converters Work?

1. Search Engine Manipulation

Cybercriminals promote these malicious websites using paid ads on search engines. When users search for "free online file converter," these ads appear at the top of search results, making them more likely to be clicked.

2. Fake Websites That Look Legitimate

The fraudulent sites use minor URL changes to resemble real file converter services. For example, a scam site might be named:

• Imageconvertors[.]com (instead of "imageconverters.com")

• Convertix-api[.]xyz (instead of "convertix.com")

3. Malware Installation Upon File Conversion

Once a user uploads a file for conversion, the site delivers an infected file back to the user instead of a clean converted document. This file may contain:

• Trojan malware

• Phishing scripts

• Adware

• Ransomware payloads

List of Malicious File Converter Websites Identified

Cybersecurity researchers and threat intelligence teams have already identified several fake file converter sites distributing malware:

• Imageconvertors[.]com - Phishing

• Convertitoremp3[.]it - Riskware

• Convertisseurs-pdf[.]com - Riskware

• Convertscloud[.]com - Phishing

• Convertix-api[.]xyz - Trojan

• Convertallfiles[.]com - Adware

• Freejpgtopdfconverter[.]com - Riskware

• Primeconvertapp[.]com - Riskware

• 9convert[.]com - Riskware

• Convertpro[.]org - Riskware

If you have used any of these websites, scan your system immediately with an updated antivirus tool.

How Are These Malicious Websites Used in Cyber Attacks?

1. Spreading Ransomware

Reports suggest that ransomware gangs are leveraging these fake file converters to compromise corporate systems. A recent ransomware attack in Iowa was linked to this attack vector.

2. Stealing User Credentials

Malware-infected files can contain keyloggers that record keystrokes and steal usernames, passwords, and banking information.

3. Exploiting JavaScript and Macros

Even if the conversion seems successful, embedded malicious JavaScript in PDF files or Visual Basic macros in Word documents can execute as soon as the file is opened.

How to Protect Yourself from These Attacks?

1. Stop Using Online File Converters

The FBI advises users to avoid online file conversion services altogether. Instead, use trusted software such as:

• Adobe Acrobat (for PDFs)

• Microsoft Office (for Word and Excel conversions)

• Cloud-based services like Google Drive and OneDrive

2. Verify Website Authenticity

Before using any website:

• Check the URL carefully for slight spelling changes.

• Look for HTTPS encryption in the address bar.

• Search for reviews and user experiences before trusting a site.

3. Use Ad Blockers and Avoid Clicking on Sponsored Ads

Cybercriminals push malicious file converters through paid advertisements on Google and Bing.
Use ad blockers like uBlock Origin to reduce exposure.

4. Keep Your Browser and Security Software Updated

Always update Google Chrome, Microsoft Edge, and Apple Safari to patch vulnerabilities.
Install a trusted antivirus like Bitdefender, Norton, or Malwarebytes.

5. Scan All Downloaded Files for Malware

Before opening any downloaded file, scan it with an antivirus tool.
Use Windows Defender, Kaspersky, or ESET for file scanning.

6. Enable Multi-Factor Authentication (MFA)

Even if your credentials get stolen, MFA can prevent attackers from accessing your accounts.

Why This Threat Matters

Cybercriminals are constantly evolving their attack methods, and online file converters are just the latest in a long list of cyber traps. As ransomware attacks and AI-driven cyber threats become more sophisticated, users must be extra cautious when downloading files from unverified sources.

Key Takeaway: If you see a free online file converter website, avoid it. Stick to trusted apps and built-in document conversion tools.

Conclusion

The FBI’s warning about online file converters is a serious cybersecurity concern. Malicious sites disguised as free tools can spread ransomware, steal credentials, and compromise devices. Users should stop using online converters, rely on trusted software, and always scan downloaded files.

By staying informed and adopting safe browsing practices, you can significantly reduce the risk of falling victim to these cyber threats.

Frequently Asked Questions (FAQs)

What is the latest FBI warning about?

The FBI has warned users against free online file converter websites that are being used to spread malware, phishing scams, and ransomware to unsuspecting users.

Who is at risk from these malicious file converters?

Anyone using Google Chrome, Microsoft Edge, or Apple Safari to search for free file conversion services is at risk of encountering these fraudulent websites.

How do these file converter scams work?

Cybercriminals create fake websites that mimic legitimate file conversion services. When users upload files, the site delivers malware-infected documents, compromising their system.

What kind of malware can these sites install?

These sites can install ransomware, trojans, phishing scripts, adware, and credential-stealing malware onto users’ devices.

Can antivirus software protect against these threats?

Yes, a good antivirus program can detect and block many threats, but some advanced malware can bypass detection. It’s best to avoid suspicious websites altogether.

What are some known malicious file converter websites?

Some of the identified scam websites include:

• Imageconvertors[.]com (Phishing)

• Convertitoremp3[.]it (Riskware)

• Convertisseurs-pdf[.]com (Riskware)

• Convertix-api[.]xyz (Trojan)

• Convertallfiles[.]com (Adware)

• 9convert[.]com (Riskware)

Why do cybercriminals create fake converter sites?

They use these sites to steal login credentials, install malware, and launch ransomware attacks, often demanding payment to restore access to compromised data.

How do these scams affect organizations?

Businesses using compromised file converters risk data breaches, financial losses, and reputational damage due to unauthorized access and ransomware attacks.

Are paid ads in search results dangerous?

Yes, cybercriminals buy ads on Google and Bing to promote fake websites, making them appear legitimate at the top of search results.

Can these websites infect mobile devices too?

Yes, smartphones and tablets are also vulnerable if users download and open maliciously converted files from these sites.

How can users stay safe from these threats?

Follow these security tips:

• Avoid free online file converters

• Use trusted software (Adobe Acrobat, Microsoft Office)

• Scan all downloads with antivirus software

• Verify website URLs before using them

What should I do if I have used one of these sites?

Immediately run a full system scan with an updated antivirus, change important passwords, and monitor accounts for suspicious activity.

Can enabling browser security settings help?

Yes, enabling features like Safe Browsing in Chrome or Microsoft Defender SmartScreen can help detect and block malicious websites.

How does ransomware spread through these sites?

Users unknowingly download infected files, which then encrypt their data and demand a ransom for decryption.

What happens if I open a suspicious file from a fake converter?

The file might execute hidden malware, steal your data, or allow hackers to take control of your system.

Are all free online converters unsafe?

Not necessarily, but many free services pose a high security risk. Always research and verify before using any online service.

How can businesses protect their employees?

Businesses should:

• Block risky sites using firewall rules

• Educate employees on phishing threats

• Use endpoint protection tools

Can hackers use JavaScript in PDFs to infect users?

Yes, malicious JavaScript code embedded in PDFs can execute malware upon opening the file.

Why is the FBI focusing on this scam?

This scam has been linked to ransomware attacks on businesses and individuals, causing financial and operational damage.

How do I recognize a fake converter site?

Warning signs include:

• Unusual domain names (misspelled URLs)

• Pop-up ads or redirects

• No clear company information or support contacts

Are there legitimate file conversion alternatives?

Yes, safe alternatives include:

• Google Drive (for document conversion)

• Adobe Acrobat (for PDFs)

• Microsoft Office (for Word, Excel, and PowerPoint)

What should I do if my system gets infected?

Disconnect from the internet, run a full antivirus scan, and restore from a backup if needed.

What role do browser updates play in cybersecurity?

Keeping Google Chrome, Microsoft Edge, and Safari updated helps protect against security vulnerabilities and phishing attempts.

Can two-factor authentication (2FA) help?

Yes, enabling 2FA adds an extra layer of security, making it harder for hackers to access your accounts even if they steal your credentials.

What kind of personal data do these malware infections steal?

These infections can steal:

• Usernames and passwords

• Banking details

• Personal and work documents

• Saved browser cookies

How can I report a malicious website?

Report suspicious websites to:

• Google Safe Browsing

• Microsoft SmartScreen

• FBI’s Internet Crime Complaint Center (IC3)

What are the long-term dangers of these attacks?

Long-term risks include identity theft, financial fraud, business disruption, and permanent data loss.

Should businesses block online file converters?

Yes, businesses should restrict access to such websites and provide approved file conversion alternatives.

Where can I get official cybersecurity updates?

Stay informed by following:

• FBI’s Cybercrime Alerts

• US-CERT (Cybersecurity & Infrastructure Security Agency)

• Trusted cybersecurity blogs and forums