Malicious PDF — malware analysis report

Static analysis result for SHA-256 133e30ca9e867ce0…

MALICIOUS

PDF

97.1 KB
MD5: d796e8eec79b90ba52918c00227108a7 SHA-1: 4cc5951ab7b189eeb8167268331c3fb6aac2cea8 SHA-256: 133e30ca9e867ce0fb122813791af409ccc1b0fdd497016c4a022661c9ada7bc
108 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating it contains an exploit. It utilizes XFA forms and contains an embedded JavaScript payload. The script appears to be obfuscated but is designed to execute, likely downloading and running a second-stage payload, which is a common technique for malware delivery.

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
455c79f1018d93ee18f943381bdee9283f4c9c1df1373ba7b694d27f725bc823
pdf-embedded-script PDF raw stream script payload at offset 0x26C 98659 bytes