Malicious PDF — malware analysis report

Static analysis result for SHA-256 7914eab05e59808a…

MALICIOUS

PDF

42.4 KB
MD5: d05edd064e6ef81c9e433a8a5b30750a SHA-1: 84a86bcb4caa403503083c4ca4f15aebb104c55a SHA-256: 7914eab05e59808ac1ffcb413fe2693db4f2c5daa4f985242274ea534f3da62b
186 Risk Score

Malware Insights

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

The PDF was flagged by multiple high-severity heuristics, including ML classification and ClamAV detection, indicating it contains an exploit. The presence of an embedded script payload and an embedded file further supports its malicious nature. The ClamAV detection name 'Pdf.Exploit.Agent-36830' is the primary indicator of the exploit type.

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/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
34384380c4c4058ee833c9f924584419351132e2e309b9e694f1fe86a8469b45		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42684 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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