Malicious PDF — malware analysis report

Static analysis result for SHA-256 708e338b7f3ae7bb…

MALICIOUS

PDF

16.1 KB
MD5: e34472c31b90eb1f8f731c63e7b81381 SHA-1: 4b57da7bd497f3d1d7c17095a8267029c42bb8b4 SHA-256: 708e338b7f3ae7bbd38d0db59667c0f648b4bac4f5fd1bd920e571471aa5a6d3
168 Risk Score

Malware Insights

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

This PDF file contains an embedded XFA form that exploits the CVE-2010-0188 vulnerability in Adobe Reader. The embedded JavaScript attempts to download and execute a secondary payload, as indicated by the heuristic firings and the structure of the script. The script is heavily obfuscated, but its intent to execute arbitrary code is clear.

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_00000354.bin
df14de12a120b1b66b3fc093530ccc5350e0aa96e6921524837e9d8e5ace552e
pdf-embedded-script PDF raw stream script payload at offset 0x354 15752 bytes