Malicious PDF — malware analysis report

Static analysis result for SHA-256 56168780ecc43fb7…

MALICIOUS

PDF

45.0 KB
MD5: cea49793dae20072c572b9d95d033d18 SHA-1: 11cc0c131050aa8775eae87b55f0a4322621273d SHA-256: 56168780ecc43fb7d10c51acd431b7ff50d7b5a373151bfafee0132fac52f9de
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detection as Pdf.Exploit.Agent-36128 strongly suggests it's a malicious PDF exploiting a vulnerability. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for initial access.

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
87d95bd3457b0f38fb4d35f715a1682f9b4605a5e5e6193c9817b2ccfe8ecdcd		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
50289345ec0cfef63cb7ea83ddd875f85ce7f054f78c08225a671045e3424d16		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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