Malicious PDF — malware analysis report

Static analysis result for SHA-256 1929046ea12cd0a7…

MALICIOUS

PDF

79.4 KB
MD5: b1eff74ca9bffa0ef44fece374c489d6 SHA-1: f2812b3a81992b532d11e103fce3ae94c05d7af3 SHA-256: 1929046ea12cd0a7bc9febc2774e51b5e4432cdde81bda7df2c68cbf3d26b97d
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 a JavaScript payload. This script is heavily obfuscated but appears designed to download and execute a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a spearphishing attachment.

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
9060b8e3882498f1c0b2720bbd5cf134bdef290f46de97240e14aac5d73cfae0		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80624 bytes

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