Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40647debeb92aa1…

MALICIOUS

PDF

3.3 KB
MD5: ecabe251d9675055717b90665cfd520a SHA-1: e7c0aedee70c3e7072f801bbac0928ad60c80d05 SHA-256: f40647debeb92aa16faf4c246ddc98bf7cd8e36e2dd97c3e66ba6e237aa0687d
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as Pdf.Exploit.Agent-36121. Static analysis revealed embedded JavaScript, indicating an attempt to execute malicious code upon opening. The primary attack pattern involves exploiting PDF vulnerabilities to deliver a secondary payload.

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
c9efb82449c9b3edb7b5140f2f0283fe73679c903bcf81d4d2256e0410d5d4ab		 pdf-javascript-stream PDF /JS object 7 at offset 0xA87 306 bytes

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