Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bdc2d4797486be5…

MALICIOUS

PDF

100.5 KB
MD5: a6386005a23795f69ddd1905452e0c57 SHA-1: 101d75c72dd9de4cd2e666c36eb981d2e92eebd5 SHA-256: 8bdc2d4797486be53070ab9045d2b4d5bf2d65d127a74c8e4ee98e39f1cfc99e
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF utilizes XFA (XML Forms Architecture) which is a known vector for exploitation. The embedded script payload and ML classifier strongly indicate malicious intent. ClamAV detection as Pdf.Exploit.Agent-6136306-0 further confirms this. 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
ad19cc4c2b6c398a53c41c20ff006982b5c1fb300156e0f5f89334da2467310c		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102150 bytes

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