Malicious PDF — malware analysis report

Static analysis result for SHA-256 01f9ab3cc71a5cdf…

MALICIOUS

PDF

16.3 KB
MD5: 65663a3e6b4a39dacfb084d3e7bc8cf5 SHA-1: 263fd7eb9b285fadedffc69dd79c99dfef4314c9 SHA-256: 01f9ab3cc71a5cdfeb341392f88aa53c9148d1f7498535c8f11782250ce1172a
168 Risk Score

Malware Insights

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

The PDF sample contains embedded JavaScript that is obfuscated and appears to be part of an exploit chain. Heuristics indicate a critical vulnerability (CVE-2010-0188) related to XFA forms in Adobe Reader, suggesting the script is designed to trigger this exploit for initial execution. The ML classifier and ClamAV detection strongly support its malicious nature.

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
d199e1f30b259d95c2cf0674680305511dba0c9da2fa2cbc072af4c4df69b9bd
pdf-embedded-script PDF raw stream script payload at offset 0x359 15944 bytes