Malicious PDF — malware analysis report

Static analysis result for SHA-256 97948fbb76a05719…

MALICIOUS

PDF

42.7 KB
MD5: 7f94007f1e5abf92fc3dea9d0a231cc1 SHA-1: fed541024737dded1893ef33672cf4822ba12779 SHA-256: 97948fbb76a057191a1b4cca5a77ebd36e154a1b28348e868bb6e7310330a811
156 Risk Score

Malware Insights

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

The critical ClamAV heuristic 'Pdf.Exploit.Agent-36830' indicates the file is a known PDF exploit. The PDF contains embedded script content and an embedded file, suggesting it's designed to deliver a second-stage payload. The embedded URLs are related to XFA forms, which are sometimes used in PDF exploits.

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
3da8eef7db6ed5e5277c71dc71e1afbdcfd2b98090a568ae70d7895ca8f76472		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 43020 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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