Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f68cd32ed3fb48e…

MALICIOUS

PDF

79.4 KB
MD5: d72c81cdc7fad9644f6c4edba686a542 SHA-1: 408adea8c61a25b80219e82d0e95d4a7835d5b1b SHA-256: 4f68cd32ed3fb48e279b76674eeff26bfc1b515755eaf25a2a513bb4607ba2ad
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

The PDF was flagged by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Agent-6136306-0) and an ML classifier indicating a high probability of maliciousness. The presence of an XFA form and an embedded script payload suggests the document is designed to exploit vulnerabilities or execute malicious code upon opening. The embedded script likely downloads and executes a second-stage payload, although its exact function is obscured by the PDF wrapper.

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_0000023c.bin
d9d6930788e569b6b41a371db28e721336c9c8230f1780a0a6f677bbc6746632		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80624 bytes

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