Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d412994c8a1ae1d…

MALICIOUS

PDF

100.7 KB
MD5: 2aef065055c8809da199499a24aff7b4 SHA-1: ed35c2f73b897d707c107187aef081cee7c009cc SHA-256: 0d412994c8a1ae1da2846a66462f5be1abc901147a05102b70c695b9a4b6ead3
108 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by ClamAV and an ML classifier, containing an embedded JavaScript payload within an XFA form. The script appears to be heavily obfuscated but is designed to execute code, likely for downloading and running a second-stage payload. The benign URLs present are related to XFA specifications and do not indicate malicious activity.

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_00000246.bin
d910d664c412402f3c2a51ea031fdf873334e6a0c828fb5498311f50c84a0123		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102372 bytes

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