Malicious PDF — malware analysis report

Static analysis result for SHA-256 631c3f0cb352b5b8…

MALICIOUS

PDF

12.8 KB
MD5: 36d3934f76aef10fbd626757baa13acc SHA-1: 1d3164358ac7fb1a8ae416735581489869b411a3 SHA-256: 631c3f0cb352b5b8219eee9886b7696cf036e4ad632aa803c85d4e7389fe8ad3
168 Risk Score

Malware Insights

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

The sample is a PDF file that exploits the CVE-2010-0188 vulnerability in Adobe Reader, as indicated by the 'CVE_2010_0188' heuristic. The embedded XFA script contains JavaScript, which is likely responsible for executing the exploit payload. The script's obfuscated nature and the exploit's nature suggest it's designed to download and execute 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_00000384.bin
f4c3281b57e06b2f53f023587fa65e872eab00a087c12de4a98d78c3e466ecb8
pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes