Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ccd2b6700418c59…

MALICIOUS

PDF

79.3 KB
MD5: dd68a0fedf33eb9cbe58845ce428b152 SHA-1: 05e1e8bfb2ac35595e5eeae71865ce39cd4edd0a SHA-256: 9ccd2b6700418c59404ddcb906d45537cc4c59862d29bc674480c833725e4240
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file exhibits characteristics of malicious intent, including the presence of an XFA form and an embedded script payload. ML classifiers and ClamAV detections strongly indicate its malicious nature, specifically identifying it as Pdf.Exploit.Agent. The embedded script is likely responsible for delivering the secondary payload, contributing to the overall attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • 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_pdf_script_0000023e.bin
848615a8f7c89eb06027070f2822c013db89677506793f585de36c9235e96578		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80469 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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