Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1aec1210d8ada00…

MALICIOUS

PDF

13.9 KB
MD5: a10307e900a4e333d227793db7f63ac6 SHA-1: 02e94af3fd2e48dd0f36bfd8af48e2621368ab7e SHA-256: b1aec1210d8ada00a45a9adb5d56a6cdaef1629f28e336a9b28e364f4bb6aed8
130 Risk Score

Malware Insights

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

The sample is a PDF file that contains an XFA form, which is a known vector for exploiting Adobe Reader vulnerabilities. Specifically, the critical heuristic firing for CVE-2010-0188 indicates exploitation of a LibTIFF vulnerability within XFA forms. ClamAV also detected this as Js.Exploit.HTML-30, suggesting embedded JavaScript used for exploitation. The embedded URL is likely related to the XFA template, but its direct maliciousness is not confirmed.

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/