Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3ecbdf90f888de…

MALICIOUS

PDF

45.0 KB
MD5: 7b25e0cb9201d0631d7ce67b1f5675b4 SHA-1: bccb1a1b1e36d3f028a07d0242a7bf6685754d25 SHA-256: 9c3ecbdf90f888de379524b22a644b9f72130e08a7a6732515dfd396269f296c
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 related to PDF JavaScript actions and streams. ClamAV detection as 'Pdf.Exploit.Agent-36128' strongly suggests it's an exploit. The embedded JavaScript is likely responsible for executing the exploit, potentially leading to further stages of infection. 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
7f4fb635d9bead566c23d8f380a7def11617b865e768b7b4210a8e280410c23f		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
ce1852d1fa7c4c82f46fe74ba8c4edac35fe37fb9e8ae75b2e509d88e73c32d1		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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