Malicious PDF — malware analysis report

Static analysis result for SHA-256 b232e6257476d37e…

MALICIOUS

PDF

12.5 KB
MD5: ef6aa052a5a8687fb50ccbd33a60585c SHA-1: f71cf463f37e6c33ac50aacf81a1dbcd2fb39701 SHA-256: b232e6257476d37e82dbed303b9174ba1ce5fc9bf4d2ce2245f7f6fa208b7e95
106 Risk Score

Malware Insights

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

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics and a machine learning classifier as malicious. ClamAV detection confirms it as Pdf.Exploit.Agent-36723, indicating it likely exploits a known PDF vulnerability to execute arbitrary code. The embedded JavaScript is the primary mechanism for this exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36723 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36723
  • 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_obj0076_000.js
23be4759a99a6b174c83c9259ce41bf7d27133a98d6dc5f3fb0961081bd10695		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11679 bytes

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