Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d4e6126574f725…

MALICIOUS

PDF

97.3 KB
MD5: 0a71dfd5e7ef6b4d661e6e3f268251f9 SHA-1: d9f9a68cf820c0579dec1af2d34c219ce19080ef SHA-256: 12d4e6126574f7259006a5b6c6046443f2c4288d2987098f8a8a8fdb505e3cce
108 Risk Score

Malware Insights

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

The PDF contains an embedded XFA form with JavaScript, flagged by multiple heuristics including a high-confidence ML classifier and ClamAV detection. The embedded script is heavily obfuscated but appears to be designed to download and execute a secondary payload. The presence of XFA and embedded scripts points to a common exploit delivery technique.

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
e346950117eb42a592682c65f5166c7a3f5d04b8c91d2d16010af54619b49205
pdf-embedded-script PDF raw stream script payload at offset 0x26C 98867 bytes