Malicious PDF — malware analysis report

Static analysis result for SHA-256 67caaaed44583848…

MALICIOUS

PDF

12.7 KB
MD5: 92a6d207c6e3cd68661133b20430e96f SHA-1: f399bd468637f6915cc9f3e1034a117f46d9725b SHA-256: 67caaaed44583848e394a482208ba9e48983b03daf1ec92aea69ad94dd3de8e5
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 the CVE-2010-0188 vulnerability in Adobe Reader. The embedded JavaScript attempts to download and execute a second-stage payload, as indicated by the heuristic firings and the nature of the embedded script. 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_00000384.bin
dbd54ea6fa7104472c6b3959e979268b0c45262e6cfc6d5e76968eb32d08b969
pdf-embedded-script PDF raw stream script payload at offset 0x384 12276 bytes