Malicious PDF — malware analysis report

Static analysis result for SHA-256 60da22e2e6d16c1f…

MALICIOUS

PDF

42.8 KB
MD5: bbc272f1660d694fe01c2a5839064458 SHA-1: bc830135d8b5157233a0faca9bac537ff11db680 SHA-256: 60da22e2e6d16c1ffc86b50b5148e12657b98aacc4859c81a405d49b86f77ce2
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF sample was flagged by multiple high-severity heuristics, including ClamAV detection for 'Pdf.Exploit.Agent-36830', indicating it contains an exploit. The presence of XFA forms and embedded script payloads suggests the exploit leverages JavaScript within the PDF to likely download and execute a secondary payload, aligning with the T1203 (Exploitation for Client Execution) and T1059.007 (JavaScript) MITRE ATT&CK techniques.

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 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 script payload in PDF stream low 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 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
a96c5e6b459eb02e7264d37d504d6234e00725537ac8fef79290a087cc8eaa19		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 43031 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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