Malicious PDF — malware analysis report

Static analysis result for SHA-256 9641fb34b8ac5433…

MALICIOUS

PDF

42.3 KB
MD5: 5be4b24f973c22ac39da12c23a34f69d SHA-1: acdeb15876dcfd1604c0bd13d713fdea173b3677 SHA-256: 9641fb34b8ac543375bc5ecfb4faa7758aad479fa7cf5963b0aec8eecb6e8004
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, indicating it is designed to exploit vulnerabilities. The embedded script is heavily obfuscated, making its exact function difficult to determine, but the overall pattern suggests it is used to download and execute 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
d2fabe84be0ddb406897ce994c3c6b8194cbbfc5936ecaaa942ec7590e1cd59f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42543 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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