Malicious PDF — malware analysis report

Static analysis result for SHA-256 061678276f3fc399…

MALICIOUS

PDF

42.2 KB
MD5: 6ee5a8a18f5ee13ead27b606d6c376f9 SHA-1: 1fb5b47734b04f34bfc8d6ad468f988c93481d79 SHA-256: 061678276f3fc399a291f3df2b1a9b0d2d33774376521f839aecb167d044eec5
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by multiple engines, including a high-confidence ML classifier and ClamAV, which identified it as Pdf.Exploit.Agent-36830. The presence of XFA forms and embedded scripts indicates an attempt to exploit client-side vulnerabilities for code execution, likely delivered via spearphishing.

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
8449a8e2c5f90e0b647b0bf9e512e9ff5051f577e8bb57ecc22c2fdb8ab000b9		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42465 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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