Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbaad397338b140…

MALICIOUS

PDF

100.5 KB
MD5: 1e5b0ff9eceee6fc515d710e031204de SHA-1: a4320be89bc76cdfe4e04aa4040b20f6f54f3e48 SHA-256: 5bbaad397338b140b5d038d94b0470ceab5cfa4ee5d7740684b2bd06be49aba2
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. The embedded JavaScript, although obfuscated, is designed to download and execute a secondary payload. The benign URLs present are likely decoys or part of the XFA form structure, not directly related to the 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
b792d9fe751f14638feb4681c6df4cb0531c677b3a73a88462c222c4762d66fa
pdf-embedded-script PDF raw stream script payload at offset 0x246 102152 bytes