Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6266db11242e778…

MALICIOUS

PDF

42.2 KB
MD5: 92ab31c3ece077c6c916d289b583f260 SHA-1: acc23a4cea82d5350b874bbea8aa4026822ba4bc SHA-256: d6266db11242e778567354a643ac06fd68658bb4ebc06295ab07315d2d6242c4
156 Risk Score

Malware Insights

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

The file is a PDF document identified by ClamAV as Pdf.Exploit.Agent-36830. It contains an embedded script payload and an embedded file, indicating an attempt to exploit a vulnerability and deliver a secondary payload. The embedded file 'embedded_file_obj0008.bin' is the primary artifact of interest.

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
82f3ad0fb3136ecdfe080d76c1265343e233415c120f4d31f6eb1065ab86d8d3		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42416 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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