Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded2a0ce0a88abd4…

MALICIOUS

PDF

42.6 KB
MD5: 1b9a44e3ae29b1de915389ae3008e946 SHA-1: 64812ec43673a448d8da36a2905eb874fe275b7d SHA-256: ded2a0ce0a88abd46d1814c35189995202b4c47e202b35f36b4225bd6ee87689
186 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF file contains embedded content and triggers heuristics indicating it is a malicious exploit. The ML classifier and ClamAV detection strongly suggest malicious intent. While no specific script was directly readable, the presence of embedded artifacts and exploit-related heuristics points to a delivery mechanism for a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
946fed21bfa1b599a069408bfdf7f49f9749348a8d25d4fb7f84c29d00cb1c04		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42910 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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