Malicious PDF — malware analysis report

Static analysis result for SHA-256 564e9c7862138dfc…

MALICIOUS

PDF

42.7 KB
MD5: 6b06762c458d0de53034ce918d8d4c2c SHA-1: 7beedebad1c5648d586eb426ea06b01c25d7d5b7 SHA-256: 564e9c7862138dfccfdc8af81a577d581d004effc77383bf9d13e12e85dd3b66
156 Risk Score

Malware Insights

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

The PDF document was flagged by ClamAV as Pdf.Exploit.Agent-36830, indicating it contains an exploit. The presence of an embedded script payload and an embedded file further supports this finding. The document body content appears to be malformed or obfuscated, preventing a clear understanding of its lure, but the technical indicators strongly suggest a malicious exploit delivery.

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
8f09d5a5ed0dd7038b86c5d68548f51b265c17de1984f42f3e49bd5febd1584a		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42959 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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