Malicious PDF — malware analysis report

Static analysis result for SHA-256 8165c1d103b55112…

MALICIOUS

PDF

101.9 KB
MD5: ac2fbe722401604def45d8b468173646 SHA-1: 184c237a30757fb7307bfc07c8d7b44fdc4ffc90 SHA-256: 8165c1d103b55112c54dd5824150d6df02781c9b5ff487d476092f84d5ab4f34
168 Risk Score

Malware Insights

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

The PDF file contains embedded XFA content which is known to be vulnerable to CVE-2010-0188. The embedded script, which appears to be JavaScript, is likely responsible for executing the exploit. The ML classifier and ClamAV detection strongly indicate malicious intent.

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
76a48b7c01db0e824a2b813d04a67ec38d55f88a64de2e0944e81ea2d86cda6a
pdf-embedded-script PDF raw stream script payload at offset 0x346 103650 bytes