Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec8cb94fd46fdba…

MALICIOUS

PDF

3.2 KB
MD5: fc9e54bfb3a66449561fd717bac4fb83 SHA-1: db6325ebbb06adaa632c18fa153a6d8dd5abba10 SHA-256: aec8cb94fd46fdba39801b1f4256ba572927c5537f6506731bdbf6e025d69d5c
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 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 identifying it as Pdf.Exploit.Agent-36121. The embedded JavaScript is likely responsible for executing the exploit, leading to the malicious verdict.

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
7b58a6946d7692fcf26019aa8634924807e859979d5961cbaf1cb7120cec8d6e		 pdf-javascript-stream PDF /JS object 7 at offset 0x9C2 431 bytes

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