Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d1d413ea2a0d41…

MALICIOUS

PDF

42.1 KB
MD5: e20d7b273124ee932843ad35fe28d15f SHA-1: 5fd88e06942f9699f6e50939e332c8bee7ddfe2d SHA-256: 28d1d413ea2a0d4103d9df581f3eaa9166058505d4f92aaae69a07cfc08c483b
188 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36830'. The presence of an embedded script payload and an embedded file further indicates malicious intent. The ML classifier output of 0.999995 strongly supports the malicious verdict. The embedded artifact's ClamAV detection reinforces the identified threat.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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
c95c616bc0004dde7c9933767c4e3d22d8deeadeed1c9b830c29a10ecdbfd70d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42362 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.