Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0284e6ad21b0519…

MALICIOUS

PDF

42.3 KB
MD5: 8a05a86e2dacbcaa73f459e4a657ea79 SHA-1: 52935eb3aa651aad2e9fc2c6983cd44f1d689058 SHA-256: a0284e6ad21b0519f79281a3a25f3de689967b4e6e5f79b43556dea1cca4f7cd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution T1059 Command and Scripting Interpreter

The PDF file contains embedded script payloads and was detected by ClamAV as Pdf.Exploit.Agent-36830. This indicates the document is designed to exploit a vulnerability, likely leading to the download and execution of a second-stage payload. The embedded script, though obfuscated, suggests the use of Visual Basic for the exploit.

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
24e4f3418a838d359d5caca5448350c3b8f48440f98e20fea2b92a11a9a25ce3		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42598 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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