Malicious PDF — malware analysis report

Static analysis result for SHA-256 259ef68803dd127b…

MALICIOUS

PDF

79.0 KB
MD5: 86739ef5902bcdd7e591318915389d8b SHA-1: 5f0cb78f9c9467c9a9c07d250a2580b76a698420 SHA-256: 259ef68803dd127b505c2513edfbc183410fefddbe83aaccdcd79347cee8d962
88 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains an embedded script payload within an XFA form, as indicated by the 'PDF_XFA' and 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristics. ClamAV detection 'Pdf.Exploit.Agent-6136306-0' confirms its malicious nature. The embedded script is likely responsible for downloading and executing a second-stage payload, although its exact functionality is obscured. The embedded URLs are related to XFA schemas and Adobe, but their specific role in the attack is unclear.

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_0000023c.bin
fe6efe94b83808318933f4db8ac12ff04f82a689285b5a4e6ff9e3b1324c2296		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80205 bytes

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