Malicious PDF — malware analysis report

Static analysis result for SHA-256 24fa9ced229a93aa…

MALICIOUS

PDF

100.7 KB
MD5: fc091174cdebce39775561e6f869c99f SHA-1: c23f748b60bb7300635957edb52d6bfeb5b28652 SHA-256: 24fa9ced229a93aaec3bc25b3f0fcbe3abbd0380fa0fc5133825a04734e6562b
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file utilizes XFA forms, a known vector for exploiting vulnerabilities. The embedded script payload, detected by ClamAV as Pdf.Exploit.Agent-6136306-0, strongly suggests malicious intent. The ML classifier also flagged this PDF with a very high probability of being malicious. The embedded script is likely responsible for downloading and executing a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000246.bin
55d5e1763d75912ce77ee31e3b17f0524fdefe392ed12376147399febece26ee		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102347 bytes

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