Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f3f09702085326…

MALICIOUS

PDF

101.2 KB
MD5: e75ff1e4839d5a3ceff4130b11b3f083 SHA-1: da7ac5912588e965d935dfdc790cb5b9d069b869 SHA-256: 08f3f09702085326ee23fa15527bce6def4dd10bd84c1e509b9632f7c84fa19a
108 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, flagged by heuristics as a malicious script payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded script is heavily obfuscated but appears to be designed to download and execute a second-stage payload, a common technique for malware delivery. The benign URLs related to XFA are likely present to avoid detection or as part of the legitimate PDF structure.

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
86713d2b2657c493789576bb6299303cb06b0e901cd7b92f27aa24f847b29f59		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102899 bytes

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