Malicious PDF — malware analysis report

Static analysis result for SHA-256 1361247514daf629…

MALICIOUS

PDF

24.1 KB
MD5: 499e6f0071403cb40d876773df5bb592 SHA-1: 216cfb7c7abda1e8ff8fe39ca567a1050b7ce273 SHA-256: 1361247514daf6298a97f197b1eb2220bcdd4a0f08a2e57ee23253278193d4c5
162 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics and a machine learning classifier. It specifically triggers the CVE-2010-0188 exploit related to Adobe Reader's handling of XFA forms and LibTIFF. The embedded XFA script, though obfuscated, likely contains code to download and execute a secondary payload, indicated by the ML_NYX_PDF_MALICIOUS firing and the critical CVE heuristic.

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-36821 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36821
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/