Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a856b58fdfd6bd0…

MALICIOUS

PDF

24.3 KB
MD5: 0df56445d0df0af0f9f04463251fb694 SHA-1: 5506f1af2bdb467b3186c2e5ba4d406dd913ecf0 SHA-256: 1a856b58fdfd6bd016d3f5b3e3f59f74353677c61ce44a52515d7866a54221f2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file that utilizes an XFA form to trigger the CVE-2010-0188 exploit in Adobe Reader. ClamAV also detected it as Js.Exploit.HTML-30, indicating a JavaScript-based exploit. The embedded URL is likely related to the XFA template, but the primary malicious activity stems from the exploit itself.

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • 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/