Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb8d4ded6c8e4c0e…

MALICIOUS

PDF

3.3 KB
MD5: 9fb25a14e7dfbfd000c1eca533c57fd2 SHA-1: d9d573dbbb0ce307a78a62f228380e4d835bf24c SHA-256: bb8d4ded6c8e4c0ef1fe8083970873d89d1f31581095b6529f09fa5d941afa0d
106 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious File

The PDF contains embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as Pdf.Exploit.Agent-36121. The embedded JavaScript is likely responsible for executing the exploit, leading to the malicious behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
8283806e34d6c9dedee5366e936836f0c8c3439f828710b8ecc0ee11ed76f901		 pdf-javascript-stream PDF /JS object 7 at offset 0xA84 307 bytes

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