Malicious PDF — malware analysis report

Static analysis result for SHA-256 15822393a1bd2714…

MALICIOUS

PDF

97.0 KB
MD5: 144de37dde55252b752c5e53e8e53ff8 SHA-1: e9bb3e10dc8cabdda951c546097c385b2327c1c2 SHA-256: 15822393a1bd271462980b66abbf3132b6861559c1fdad95021eddc3896ebac7
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 within an XFA form, a common technique for exploiting PDF vulnerabilities. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded script, though obfuscated, is designed to download and execute a secondary payload, as suggested by the heuristic firings and the nature of the script's logic.

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
65840d5b7f7bdf91c815729d0d74432f8cc5c8a6ca8bc9269ea80b8346b13dad
pdf-embedded-script PDF raw stream script payload at offset 0x26C 98657 bytes