Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea078e0a13fe433…

MALICIOUS

PDF

3.3 KB
MD5: 349714765d3d4b171192f3b24286cac6 SHA-1: 88c3bfdfc8845ea2d234549ea4aab130ba5e5127 SHA-256: fea078e0a13fe4332c2ae1d819ea9ebb65d3b6fdcafa335f8abc9795b9acb032
106 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically detecting 'Pdf.Exploit.Agent-36121'. Analysis revealed embedded JavaScript, indicating an attempt to exploit vulnerabilities within the PDF reader. The JavaScript's purpose is to execute malicious code, likely leading to further compromise.

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
c677a1a5ed81ff053f9723c6f1afced36c730f38ea035f19b2c50cb4653f7557		 pdf-javascript-stream PDF /JS object 7 at offset 0xA84 378 bytes

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