Malicious PDF — malware analysis report

Static analysis result for SHA-256 1803a7871bcae9bd…

MALICIOUS

PDF

16.2 KB
MD5: 4322d30f75147fec21819fb1d13727d6 SHA-1: fdadeb4dc9aa576ddfd8baed3efc692a454c7a4c SHA-256: 1803a7871bcae9bd4d83957c75baaad282a99d34be9c0f4f65a1b02e38adb64f
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript that is likely intended to exploit the CVE-2010-0188 vulnerability in Adobe Reader. This exploit is designed to execute arbitrary code, as indicated by the critical heuristic firings and the ML classifier's high confidence. The embedded script itself is heavily obfuscated, but its presence within an XFA form points to a client-side execution attack.

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
a772d8458df460d9013ff9a34a0465db7c59558a12afe70f451f066b8518a9a6
pdf-embedded-script PDF raw stream script payload at offset 0x359 15885 bytes