Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d50e4808228e5c…

MALICIOUS

PDF

8.2 KB
MD5: 0744837698c55b0e9668206ed5e0c3a8 SHA-1: e995a427010089032131e4196a314b47a9fc15a0 SHA-256: b1d50e4808228e5c29a8ed6f045e593b0a61a4bab6d47cd68fc7471d6d2e206a
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a high-severity ML classifier and critical ClamAV detection, indicating malicious intent. The presence of embedded JavaScript, identified by PDF_JAVASCRIPT and PDF_JS heuristics, suggests the file is designed to execute arbitrary code. While the JavaScript content itself was not detailed, its presence strongly implies a dropper or exploit delivery mechanism. The ClamAV detection name 'Pdf.Dropper.Agent' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7294221-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7294221-0
  • 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_obj0069_000.js
2aa84151ccafab4c5a4ab36eac429adef93863b3511d042fdd7a29395fda3a53		 pdf-javascript-stream PDF /JS object 69 at offset 0x1BE 20233 bytes

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