Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ed8c854b1387d9…

MALICIOUS

PDF

45.0 KB
MD5: d481bd71b6c357494aabbae47487cca6 SHA-1: a57f5c53641c5b07202c7659facfa4fa5b9b79ff SHA-256: c3ed8c854b1387d9a57b9923509d60221c18f1093a5c7c58f3705f2e3703da8a
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings and the presence of extracted JS streams. ClamAV detection as 'Pdf.Exploit.Agent-36128' strongly suggests exploitation of a PDF vulnerability. The embedded JavaScript is likely responsible for executing a malicious payload, although its specific actions are not detailed in the provided evidence. The document body content is not indicative of a specific lure.

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36128 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36128
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0008_000.js
3e1c983f53092aec9ce96caeb4daf9d6b0a4b1c3351c5ace9d798cc3f2b212c7		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
323bdad5811c3fb25e0a5b5e4255f36873c43eba8f5491100402ff661ce81b2d		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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