Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0822e8ed95396b…

MALICIOUS

PDF

42.3 KB
MD5: ee697f8db7241bbd9b45635cf64ab63e SHA-1: ff8344b01faa78af7c2a55bb6c84bb050f8d6d83 SHA-256: 9f0822e8ed95396b3c1517e02662442a51b1d6a48ac9c52d6c4f91e78d64561e
186 Risk Score

Malware Insights

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

The PDF file contains embedded content and is flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36830'. The ML classifier also strongly indicates maliciousness. The embedded nature and exploit detection suggest the file is designed to deliver a secondary malicious payload upon opening.

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
f145b3e1178d29c4b523d4ad4c97fedd759bcd2ab3f9a5975147295cdc5b1144		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42613 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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