Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ce25f118dbcfd7…

MALICIOUS

PDF

97.3 KB
MD5: ad0928972c780dd80b37b92cd84316df SHA-1: 0384de8c40d206099b86be821bf8b041b030440f SHA-256: 33ce25f118dbcfd7f3a5e7bdf43f36163568ecaac6dae3878a367e5511f1843a
118 Risk Score

Malware Insights

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

The PDF utilizes XFA forms and contains an embedded script payload, as indicated by multiple heuristic firings. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded script is likely responsible for executing the exploit, although its specific actions are not detailed in the provided evidence. The URLs present are related to XFA schemas and Adobe, but their reputation is unknown or benign.

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_0000026c.bin
6911c4758dfed267cc882a491d863426a26ffe63e232bba25078783e96f7547d		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 98873 bytes

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