Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd8c1faa3f5086d2…

MALICIOUS

PDF

3.3 KB
MD5: e79903d6ab12fe47b165c354175bd29c SHA-1: 1193fa3656ad7ed5fb4eadcef8b5276e1ca591e2 SHA-256: cd8c1faa3f5086d20517369408043278c2987a217255d06dad427b4504f5538f
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically detecting it as 'Pdf.Exploit.Agent-36121'. Embedded JavaScript was also detected, indicating an attempt to exploit vulnerabilities within the PDF reader. The primary attack pattern involves leveraging these vulnerabilities to execute arbitrary code.

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
b14afae44a128998dc3c5b8e5b9f2de452add3d67bd1867af534e1f7d383d617		 pdf-javascript-stream PDF /JS object 7 at offset 0xA87 309 bytes

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