Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab105de9aaefa05…

MALICIOUS

PDF

96.9 KB
MD5: 2a48d935efc299aac1d7e5ef096eddd1 SHA-1: 8d321f497391c98b87404076d778ee21cdc6b371 SHA-256: 6ab105de9aaefa056dee51a3e5d0a6c09c280a371c2b9d8ec357a912c8b137ee
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 XFA form with a JavaScript payload. This script is designed to execute arbitrary code, as indicated by the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics. The script's obfuscated nature and its likely function of downloading and executing a secondary payload suggest a malicious intent, consistent with a phishing or exploit delivery mechanism.

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
f1910be52299114c9d5118f10f6dfa1e7e179313872a564dddc27c4b99ff8282		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 98545 bytes

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