Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e1e159b2cc56c95…

MALICIOUS

PDF

42.9 KB
MD5: b013c65f6476ffbd2995077efebf75fa SHA-1: ae4bdd79a0290513563f2353be55b144d339bbed SHA-256: 2e1e159b2cc56c95c9678a32a70363a5d7863cfbcb0e21d4fceefef8c3076501
186 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including ML classification and ClamAV detection, indicating it contains malicious content. The presence of embedded files and scripts strongly suggests it's designed to exploit PDF vulnerabilities. The ClamAV detection name 'Pdf.Exploit.Agent-36830' is included as a primary IOC.

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 0xC6 46 bytes
embedded_file_obj0009.bin
868f6c6ee2cf2abdd39d76a50f0f403bdc9e4a769d5f70b0f5248b079e9416e2		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x13C 689 bytes
embedded_file_obj0010.bin
69650a61091a018036679a3439cc6a018b6a91ebe9e0e3a6b36ceb04d6491a4f		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x438 160 bytes
embedded_file_obj0011.bin
bcf806ab2a40860fb7c7ed719776df6c6bf71566e8ad4a4e5c7135ce80a503d4		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x523 448 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x72E 190 bytes
embedded_file_obj0014.bin
1b3bce614a5ec11e9a2882727fc9ba6e03297b52dd4da19587cde253b6a9f698		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x839 41136 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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