Malicious PDF — malware analysis report

Static analysis result for SHA-256 29bddd4db9ad0611…

MALICIOUS

PDF

111.8 KB
MD5: b491d45dc8105d05fff11e8edf721c9a SHA-1: d385744d3e8bc3d3042c35741a2e094bcd8454b1 SHA-256: 29bddd4db9ad06119b6744d2076f9c5ccf5cecf2c74cdc31f4d69e1e09d16769
118 Risk Score

Malware Insights

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

The PDF utilizes XFA forms, a known vector for embedding malicious scripts. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded script payload is likely responsible for executing the exploit, though its specific actions are not detailed in the provided evidence. The embedded URLs are not directly actionable for maliciousness.

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_0000026a.bin
ef391cd1b178daf2db9119df3d0028b5cda922d0f5007859e2f8c4289e249f36		 pdf-embedded-script PDF raw stream script payload at offset 0x26A 113807 bytes

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