Malicious PDF — malware analysis report

Static analysis result for SHA-256 6693b5a798cd59dc…

MALICIOUS

PDF

79.3 KB
MD5: 375a1976eda63a2cbfbe9466fe0ab909 SHA-1: 3dec324f0ec9561cd456e304b5daa749903843ad SHA-256: 6693b5a798cd59dcfbda24c22a2a6b77b0150159043d8eec0fa2849d5c179275
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic and the presence of script content within the XFA template. The script appears to be obfuscated, but its structure suggests it is designed to execute malicious code, likely downloading a second-stage payload. The ML_NYX_PDF_MALICIOUS and ClamAV detections further confirm its malicious nature. The benign URLs present are likely decoys or standard XFA schema references.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low 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 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_0000023c.bin
7cdc8b44c37ff4bff6aaf8466d3a21dd792d22d988f1a991df40cb9638ca038a		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80448 bytes

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