Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f5c5107002172ac…

MALICIOUS

PDF

79.1 KB
MD5: c859f653178605fdd470c32aba73c796 SHA-1: 93733952b92f7646ac8f03e2bc4bc03b2538ee3f SHA-256: 7f5c5107002172acbb743bb93cb2fba780f670b6f5b1ca0d54b6a0de96bb33f8
178 Risk Score

Malware Insights

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

The PDF was flagged by multiple high-confidence heuristics, including ML classification and ClamAV detection, indicating it contains an exploit. The presence of an XFA form and an embedded script payload further supports this. The embedded script is likely responsible for downloading and executing a second-stage payload, as indicated by the ClamAV detections on the embedded artifact.

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
92a0a984e4c083f60e1281a4fa768f0ff63ea5d5eb3c5ae007acba4da6ae9bd8		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80301 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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