Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ced93842c8f2c0…

MALICIOUS

PDF

97.9 KB
MD5: f302cc52da2cd77eb1fb132c42639b8a SHA-1: 84620e76fc0b2c1c679015874aaf67ebcdf53daf SHA-256: 11ced93842c8f2c0b8cdd3f33cc012cf75e830b5faae3feb8ef47b4c446884d5
108 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. The presence of an XFA form and embedded JavaScript points to an exploit targeting PDF viewers. The script likely attempts to download and execute a secondary payload, a common technique for initial compromise.

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_0000026c.bin
5cc3a7267f81eb6c882874d43d74fade1e6d31983fa888305c52eeca2bd542b0		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 99513 bytes

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