Malicious PDF — malware analysis report

Static analysis result for SHA-256 9674e40b3be75ec4…

MALICIOUS

PDF

42.4 KB
MD5: d2f39ef1d83a2fee678bdbce196ccecb SHA-1: 5d20173e05dd69047435a7961e99e8d5d29e61e4 SHA-256: 9674e40b3be75ec48c83ea7af25155c26efd94b529466613d673ebda513f6cf5
186 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Agent-36830) and a high ML classifier score. It contains an embedded script payload and an embedded file, indicating it's designed to deliver and execute further malicious content. The presence of XFA form elements and embedded URLs suggests a potential exploit targeting PDF rendering or form processing capabilities.

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
9fbee1258f2c5f03ebec04f4de5b10c2c5ed5298902afdba6a0825d310cdb5df		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42701 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.