Malicious PDF — malware analysis report

Static analysis result for SHA-256 63894c7954cbb7fd…

MALICIOUS

PDF

101.6 KB
MD5: 3e5b0fb268e67565cbf205fe021110e3 SHA-1: c8284eb6b816840227a6d1d6a0449a2bf73f2151 SHA-256: 63894c7954cbb7fdbf0dac82c026559b65258388757cfc91560d1d64ac09eded
168 Risk Score

Malware Insights

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

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability, specifically targeting Adobe Reader's LibTIFF component. The embedded XFA form and script indicate an attempt to execute a malicious payload. While the script content is heavily obfuscated and truncated, its presence alongside the exploit points to a client-side execution attack.

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_00000346.bin
665fbc0b9ed52502602ed9f0bc46e5d60cce31096219ed338ff891cbd61720f6
pdf-embedded-script PDF raw stream script payload at offset 0x346 103353 bytes