Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17f0618abd29cad…

MALICIOUS

PDF

42.8 KB
MD5: a270c3e821a0a593d1094e03b3ce9b7f SHA-1: f10b0f4ffa78507ef38c35d9d9662c7a585082da SHA-256: d17f0618abd29cad87480bfce90593bda65cb69bf14195ec2801d48a8e8f2f08
186 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36830, indicating it's a known PDF exploit. The ML classifier also strongly flagged it as malicious. The presence of embedded files and scripts within the PDF stream suggests it's designed to deliver a secondary payload, likely exploiting a vulnerability to achieve this. No specific family could be identified.

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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
0a2224c4023b216235b61c3fc4dd17bbfac1ab23a545687f51b97604cf654712		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 46 bytes
embedded_file_obj0009.bin
7dc0cb6d6cfa44b91127bf8e9d90af15e3b63f02d362909605fb8a7d5b19e9cd		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 689 bytes
embedded_file_obj0010.bin
0fe7596619d7974f48bb0928a6efec8cf5bea691a6bfb71cb5fbc41c3ca73638		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x449 168 bytes
embedded_file_obj0011.bin
fa94adf8a58d590994e77e984facde1227ac75acb05630c249596d7179a6b43b		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x53C 431 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x736 190 bytes
embedded_file_obj0014.bin
ee8a621a41a9ecf472d102204c3cdd17923ace80c8179301bb131fdfaa9a4aa5		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x841 41028 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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