Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2aacc35c2bda005…

MALICIOUS

PDF

45.0 KB
MD5: 8d41c0abab56055c1470e9f5312e138a SHA-1: eaa4b54012474075261d167337d934862b66246c SHA-256: f2aacc35c2bda005c5e2883a559aab80e8da644896f2861309f9f9288271dc1a
76 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as Pdf.Exploit.Agent-36128, indicating it contains a known exploit. Embedded JavaScript streams were found, which are commonly used to deliver second-stage payloads or exploit vulnerabilities within the PDF reader. The deobfuscated JavaScript suggests an attempt to execute malicious code.

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
a0767c9a5f582204b1f4b4e037cde4ee6ed30f2b00184af43734a8ef3bb35d26		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
36007f9f4e078976bc23cf81314d9b23a3c4be047a5764651a4564ff8c747000		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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