Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5ac794cb948ed9…

MALICIOUS

PDF

42.3 KB
MD5: d4b67513c091381bb6d4e4b3b59984f0 SHA-1: f8046f8beaa1c09d29d28c05fc64f7d8723762a7 SHA-256: df5ac794cb948ed92d6fde33e471f4a5f130af027c111ce2823f993ece4db4d1
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36830, indicating it's a known PDF exploit. ML classification strongly supports this verdict. The PDF contains embedded content and an embedded script payload, suggesting it's designed to download and execute a second-stage payload. The specific exploit and delivery mechanism are not fully detailed in the provided evidence, leading to an 'unknown family' classification.

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
9da98c60969a7a2d11b4f89032cfc1ff9b11f61b2b2705a6de658516fdf7c4d5		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42613 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.