Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c2b857aea67c86e…

MALICIOUS

PDF

16.2 KB
MD5: af55b80b3a7a49816dd4049fd0d0bc1e SHA-1: 021ce70e102b375b9a6d31c6236dcbbc36a8b89f SHA-256: 7c2b857aea67c86e3d5e819a3fb2d82ff917350dee26e37e165e6c9255b2dc40
168 Risk Score

Malware Insights

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

The PDF file contains embedded XFA content that exploits CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF processing. The embedded JavaScript, though truncated, is indicative of a malicious payload designed to be executed upon opening the document. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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
39b5f9318d07d96af8e54256c0e554a92e1ddbf04218a7240dd76be0cc74157b
pdf-embedded-script PDF raw stream script payload at offset 0x359 15901 bytes