Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f76c1310e4b952a…

MALICIOUS

PDF

73.4 KB
MD5: 9527a6d1766ccba39e08202a2204790b SHA-1: caf5510325bddbb8f45d5567869fcbf9ff8e690a SHA-256: 0f76c1310e4b952ae48c79578a7a44a68cba4a02ad6affa4c90aa7f182a4b25a
168 Risk Score

Malware Insights

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

The PDF sample contains embedded JavaScript that is likely part of the exploit chain for CVE-2010-0188. This vulnerability in Adobe Reader's handling of TIFF images within XFA forms is known to lead to arbitrary code execution. The ML classifier and ClamAV detection strongly indicate malicious intent, with the embedded script being the primary mechanism for exploitation.

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_0000034e.bin
76ccf8cfbbcb52063aef21df4874e0dcf637e33c10bafcbc0e238cc9d75b14ba
pdf-embedded-script PDF raw stream script payload at offset 0x34E 74422 bytes