Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8349b00981cddc…

MALICIOUS

PDF

42.6 KB
MD5: 494ad6f9923b88850d8f240abe70e596 SHA-1: a1b3b47cf8e4f294f2aa075ec0038fa9a0ae39be SHA-256: ad8349b00981cddc9625540e3c0ffe905ea6a0a821c7666ea494650ce8c3c896
156 Risk Score

Malware Insights

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

The PDF file contains embedded script payloads and is detected by ClamAV as Pdf.Exploit.Agent-36830. This indicates the file is designed to exploit vulnerabilities within PDF viewers to execute malicious code. The embedded script is likely responsible for downloading and executing a second-stage payload.

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
54b4f46b826504d0a599e47ce67787b82f6f283aba9a51d0de8dede1a6ce403d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42837 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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