Malicious PDF — malware analysis report

Static analysis result for SHA-256 4effe59fef8f312b…

MALICIOUS

PDF

79.1 KB
MD5: 993c3de6d69f172eb87689690527a605 SHA-1: 82c8b7aba2998f1303615bd9d30c5151214bee21 SHA-256: 4effe59fef8f312b28ab194c763158edb416cbdd3eeb4cc3065809b29919c4c7
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 utilizes XFA forms and contains an embedded script payload, strongly indicating malicious intent. ClamAV detections (Pdf.Exploit.Agent-6136306-0 and Pdf.Exploit.Agent-36769) confirm its malicious nature. The embedded script is likely responsible for executing the exploit and delivering a secondary payload, though its exact function is obscured by the PDF structure.

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
642533c98d2ffcf5f45ea18645b820b9ad98a1fbb602f20a43eeb019612e3705		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80301 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.