Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f01b98e7c2688ce…

MALICIOUS

PDF

79.4 KB
MD5: ac7b7f179a32fa30af87260d5ab86e9b SHA-1: 2e5ec27c01f2cf3c1d2c1b463057801defce4ba4 SHA-256: 7f01b98e7c2688ce7262f95e879e6fbd3b6221bff3a1384534b979c3b79ed3b7
108 Risk Score

Malware Insights

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

The PDF contains an XFA form with embedded JavaScript, flagged by multiple heuristics including ClamAV and an ML classifier. The embedded script is heavily obfuscated but appears to be designed to download and execute a second-stage 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_0000023c.bin
060016867c47b6632a1960cc0f342f35647e02f5197409bb2d48f8a0bf1d0f26		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80622 bytes

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