Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4bd46936eb43df6…

MALICIOUS

PDF

100.5 KB
MD5: 7d277062c2cd278ff3e1e44214c4f34e SHA-1: b2679e390bff146c26fa33dae6b5ee4160c21258 SHA-256: b4bd46936eb43df65e8329e946ff0385b73544f01b42a6d82617ef0307d357ee
88 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious PDF T1566.002 Phishing: Spearphishing Attachment

The PDF file contains an embedded script payload and utilizes XFA forms, which are known vectors for exploitation. ClamAV detection as 'Pdf.Exploit.Agent-6136306-0' strongly indicates malicious intent. The embedded script is likely responsible for delivering the secondary payload, although its exact function cannot be determined due to its size and potential obfuscation.

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
d210f549dfadb1694f8b651795e21303b8572a0ab7e9096a49cdb3bc1cf6198f
pdf-embedded-script PDF raw stream script payload at offset 0x246 102150 bytes