Malicious PDF — malware analysis report

Static analysis result for SHA-256 252b61c20e50e1ba…

MALICIOUS

PDF

45.0 KB
MD5: 94e7e7b5c2182471579e6910a214fbff SHA-1: 34ee0d09ee7fb1058a04073c6432182a9188039a SHA-256: 252b61c20e50e1baad4aeff5ef1740f51fc520f12bb1116fd47916f3438e7652
76 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, indicated by multiple heuristic firings and the presence of extracted JS streams. ClamAV detection as 'Pdf.Exploit.Agent-36128' strongly suggests malicious intent. The JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for PDF-based malware delivery. 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
d715d23dfc18ac390c1897be5ee780fc26569773b27aef9d2990c52d10b47131		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
be608d04a50e0a764318ae65d82e8183f448947900b5379650bd95e691f3e4af		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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