Malicious PDF — malware analysis report

Static analysis result for SHA-256 73781c94827635c4…

MALICIOUS

PDF

16.2 KB
MD5: d6493ebca7153fedb4a1905fc7b18a85 SHA-1: ff56078c15294cc8826d5d1e834b26aeee893998 SHA-256: 73781c94827635c4ea2bd11262a94a8cc943227244377d6f3d2cec24480a087e
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript within an XFA form, which is designed to exploit CVE-2010-0188 in Adobe Reader. This exploit is capable of executing arbitrary code, indicated by the critical heuristic firing for this CVE. The embedded script, although truncated, suggests further malicious activity, likely downloading and executing a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000359.bin
23b55ddd4aa2a7f0ad87f9cda9173933a73290d192e5aa44e6bfe62b8727ca73
pdf-embedded-script PDF raw stream script payload at offset 0x359 15885 bytes