Malicious PDF — malware analysis report

Static analysis result for SHA-256 da25d0bf6af1c9f0…

MALICIOUS

PDF

100.7 KB
MD5: d09a15e29814a59ca35c03de539b0cfc SHA-1: 28db66f9b3eea0cf5f0b9fdb7b31ce77cdf5acb9 SHA-256: da25d0bf6af1c9f01377562737a5d4fe9777334fd051ea443949bf29405f9c3e
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1204 User Execution T1566 Phishing T1566.002 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV and an ML classifier, with heuristics indicating the presence of an XFA form and an embedded script payload. The embedded script is likely responsible for executing the malicious payload, potentially through user interaction, aligning with phishing or spearphishing attack patterns.

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
f4d2015d812840cd71e4bd1db75075e3cd2f291afa12b26ebdddf8d8d71b3f21		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102347 bytes

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