Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4dc5acf8d909e5…

MALICIOUS

PDF

79.3 KB
MD5: bc9857cb143ef84f3605caf7905ba04d SHA-1: eac06d6e76799f707585a8b7e8c27ce04c23a197 SHA-256: 9e4dc5acf8d909e59cc332a3defad647f3ca5346b4fb4d5ecab9521363e5bee5
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains an embedded script payload and triggers heuristics related to XFA forms and malicious PDF exploits. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded script is likely responsible for delivering the exploit payload, although its exact function cannot be determined due to obfuscation.

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
  • Embedded script payload in PDF stream medium 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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
689130f0af0605046f1efb12f308e3a70e8ac2a1a9fa28d02f765dfb89c930a0
pdf-embedded-script PDF raw stream script payload at offset 0x23C 80536 bytes