Malicious PDF — malware analysis report

Static analysis result for SHA-256 12c05ed2c1055b8a…

MALICIOUS

PDF

47.6 KB
MD5: 473dd5d7a967eb5ee9d1aa8e79c0d681 SHA-1: 8e2651cbb0924cdb0585c081aa4486bbe9d4c973 SHA-256: 12c05ed2c1055b8aefdc3c0089cff59f5de9b219f3c0f7ca1f547fb54a7cb024
106 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file flagged by multiple heuristics and a machine learning classifier as malicious. ClamAV specifically identifies it as Pdf.Exploit.Agent-36388, indicating it likely exploits a known PDF vulnerability. Embedded JavaScript actions and streams suggest the execution of malicious code, likely to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36388 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36388
  • 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.

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