File Threat Analyzer
Heuristic safety check on a file — extension vs magic mismatch, double extensions, embedded scripts, size anomalies.
How to Use
- Drop a file.
- Heuristic flags appear — this is a quick check, not antivirus.
- Upload the SHA-256 to VirusTotal if needed.
Checks performed
About the File Threat Analyzer
File Threat Analyzer is a quick, free tool for image, audio and file tasks. It works in your browser and keeps everything on your device. Heuristic safety check on a file — extension vs magic mismatch, double extensions, embedded scripts, size anomalies.
How it works
Enter what you have and read the result as it updates live. It all runs on your own device, so it is quick and private, with nothing to install.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
Is this AV?
No. It flags patterns commonly associated with malicious intent.
False positives?
Likely for edge cases — treat as hints, not verdicts.
How do I use the File Threat Analyzer?
Simply type your numbers and read the result, which refreshes the instant you change something. There is nothing to submit and nothing to wait for.
Does it cost anything or need an account?
No. The tool is completely free, there is no account to create, and it keeps working offline after the page first loads.
Is anything I type uploaded?
No. The tool works entirely on your device, so the values you enter never leave your browser.
Common Use Cases
Quick triage
Before opening unknown downloads.
Evidence
Document suspicious indicators.
Last updated: