Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f6879b8a038ee7…

MALICIOUS

PDF

42.2 KB
MD5: 862cfa2ca9ba4026115d64156a5f6f34 SHA-1: d2d372872abcb4381c0c1312890ef4c3afe9d71f SHA-256: 29f6879b8a038ee708290456adc9b2cd7bc7d4ab7be4918c5f4e04f9fea32051
156 Risk Score

Malware Insights

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

The PDF document contains embedded script payloads and has been detected by ClamAV as Pdf.Exploit.Agent-36830. This indicates the file is designed to exploit a vulnerability within the PDF reader to execute malicious code. The embedded file and script suggest a downloader or exploit delivery mechanism.

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/xci/1.0/
    • 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
50c7c8b54ccaa6f12bd9d0a51b3de1cfb7d4eb336883920a4b2ddf910c9f1b49		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42495 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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