Malicious PDF — malware analysis report

Static analysis result for SHA-256 051e683be776fc2b…

MALICIOUS

PDF

16.0 KB
MD5: 632cda9246273f387e567540251079e4 SHA-1: 94b44f9f962473a4fd80e6222bdc82e7f0f490a9 SHA-256: 051e683be776fc2be1161d2fbd24b338965188f0d0b4934c8646dba8c4b056c4
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers the CVE-2010-0188 exploit, indicating it's designed to execute arbitrary code. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded script, though truncated, suggests an attempt 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_00000354.bin
81164e9516b15a5ff3c2782de65929ff7451dee4c0af9b0498d62f875e2dc2c8
pdf-embedded-script PDF raw stream script payload at offset 0x354 15643 bytes