Malicious PDF — malware analysis report

Static analysis result for SHA-256 9656c7c0e01d51ef…

MALICIOUS

PDF

44.6 KB
MD5: 9db10589e3efecb2ff284f74b7257275 SHA-1: 63cfec7e376484d3949bcdddc42fb4940f0e48f1 SHA-256: 9656c7c0e01d51ef7e5c58ad93b74151c65b4607daeec7c04fa17ebd1152e6fd
186 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating it contains malicious content. The presence of embedded files and scripts strongly suggests it's designed to exploit vulnerabilities and deliver a secondary payload. 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 0xD5 46 bytes
embedded_file_obj0009.bin
58481460d0e5b9442c3b8f27ae56f7aa3969be756775de0d79c8d445a871b6f0		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 689 bytes
embedded_file_obj0010.bin
69650a61091a018036679a3439cc6a018b6a91ebe9e0e3a6b36ceb04d6491a4f		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x449 160 bytes
embedded_file_obj0011.bin
b7afaa92ecbe701ffd23d88883d2e36d25afa22a3519787ced7b8a3a03fc3e68		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x534 469 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x754 190 bytes
embedded_file_obj0014.bin
24f6cad53f052b40ffa3659c62d569151d5bda99aecc48ca2aa2c38bf3cf6bbb		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x85F 42829 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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