Malicious PDF — malware analysis report

Static analysis result for SHA-256 334ad3258345270d…

MALICIOUS

PDF

45.0 KB
MD5: ad51c6521a662e463cfa16329bbd7e51 SHA-1: 005014006cb1d7a958dccc4260a29b09a7225e48 SHA-256: 334ad3258345270d253ee1b1e39c097219811471d8143a89dda79fbb29d88fea
76 Risk Score

Malware Insights

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

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 exploitation of a known PDF vulnerability. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for malware delivery via malicious documents.

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
a0c2dd765f9fad5aa223b2d83cb544a3c36c91bb98ab781c45036abcffebaf00		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
dfd24cb6f0e81c122347e69f42e7efe6d9753c349c6069b34a6bcb8543761a02		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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