Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb292839af7d227…

MALICIOUS

PDF

1.95 MB
MD5: a20fe2357ed413babbf7abb763446269 SHA-1: 4abe5577f4e686cf4816f99ebe79ed1d6e335806 SHA-256: 0fb292839af7d22737b83cdc9219bf6fb4af28f528bc196cb18bbebdb2bd3090
168 Risk Score

Malware Insights

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

The file is a PDF that leverages the CVE-2010-0188 vulnerability, a known exploit for Adobe Reader's LibTIFF component. The embedded XFA form and script indicate an attempt to execute arbitrary code. The script itself appears to be obfuscated JavaScript, likely intended to download and execute a second-stage payload, though its exact function is truncated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
a2d65f88ab6dbaa2425d221b1ee632418735aa61396a5febbf083ab6fcdb1381
pdf-embedded-script PDF raw stream script payload at offset 0x359 16150 bytes