Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe68ea24ee2d385e…

MALICIOUS

PDF

42.7 KB
MD5: 8392118d481eeebe45f84a1b69072029 SHA-1: 41920f8769e15199695bf968d75e115be8d76751 SHA-256: fe68ea24ee2d385e713d1fd211d595b448db97acf1e1cf7f5fff6aec0661e429
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: Malicious PDF

The critical ClamAV heuristic firings indicate this PDF is recognized as malicious, specifically as Pdf.Exploit.Agent-36830. The presence of an embedded script payload and an embedded file further supports the likelihood of exploit delivery. The embedded file artifact is likely the 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
eff31ac61dedd14caf9161e9dfa62a0a2a49cf3977c594a2ce9726120eca9fca		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42965 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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