Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c691dcf21d7863…

MALICIOUS

PDF

100.7 KB
MD5: 05c48584f907c918cc7e7f7edda6175c SHA-1: 8207693d477cfe0cdcc41fb1c85c636efbda2d14 SHA-256: 03c691dcf21d78631d62382e344eb02a0c6162aa4e7fcfef02381e5d5572b035
108 Risk Score

Malware Insights

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

The PDF file contains an embedded JavaScript payload within an XFA form, flagged by multiple heuristics including a critical ClamAV detection for 'Pdf.Exploit.Agent-6136306-0'. The embedded script is heavily obfuscated but appears to be designed to execute malicious code, likely downloading a second-stage payload. The benign URLs present are part of the XFA schema and do not indicate malicious intent.

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_00000246.bin
b2c8870887a8bd4e0010581ba55650dbe0547da89416757213fa1dcfbdf9aae4		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102374 bytes

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