Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9ee1b41ebbe4a3…

MALICIOUS

PDF

100.5 KB
MD5: b5fb29d8e6f30c23855ebdd74ce463fb SHA-1: 2ed8f07ba526560d2db651ebeae2ff8277c2311e SHA-256: 3e9ee1b41ebbe4a3c3e5dfa02e74f71e97c9bfee4fc930e106d340852eeed2ff
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. Static analysis detected an embedded script payload and a high ML score, corroborated by ClamAV flagging it as Pdf.Exploit.Agent-6136306-0. The embedded script is likely responsible for downloading and executing a second-stage payload, contributing to the overall malicious nature of the document.

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
5e56fe9a3f5a2de35075cf34e3bb65ffc517d008aa893db094ba40841de753d2		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102150 bytes

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