Malicious PDF — malware analysis report

Static analysis result for SHA-256 48704009fc519b61…

MALICIOUS

PDF

79.1 KB
MD5: 29a916c83b4aa80960ce217c36cf8eb3 SHA-1: 4a6793899b948d33663ec811dd17856325acc125 SHA-256: 48704009fc519b61c6990a7f654133a0f958d849c51eecfbe8f4efa2bd6f8614
180 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious PDF T1059.007 Abuse Elevation Control Mechanism: JavaScript/VBScript

The PDF was flagged by multiple high-confidence heuristics, including ClamAV detections for 'Pdf.Exploit.Agent-6136306-0' and an extracted artifact. The presence of an XFA form and an embedded script payload indicates a likely exploit attempt. The embedded script is likely responsible for delivering the malicious payload, as suggested by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic.

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
bb939333b63bb580866e5a27f08cf37a395b9f974fa483853b01026b00eee010		 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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