Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a5ae6c49ab7b73…

MALICIOUS

PDF

42.9 KB
MD5: bb1df9443fa5c0511e4a127ff9074338 SHA-1: 7d15b79e6d2e20c4fe5a2714bd20bd04b602fe15 SHA-256: 72a5ae6c49ab7b7362f5b244552b5a26ea51e81150d3a5588b31f29215c1b4ad
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with critical heuristics indicating it's a PDF exploit. The presence of an embedded script payload and XFA form suggests an attempt to execute arbitrary code upon opening. While specific URLs are benign, the embedded artifact and exploit detection point to a malicious payload delivery.

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 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 script payload in PDF stream low 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 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
6085cab3ab76fff58b7cc93d495c72783aab44549027c2489aa347fd78938552		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 43158 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.