Malicious PDF — malware analysis report

Static analysis result for SHA-256 205829384cc00284…

MALICIOUS

PDF

24.4 KB
MD5: 2194e0abfd3edbcbf40722af749d6641 SHA-1: 9dfbac9c39b73ae06dd9cf5261ec430fc0a857b9 SHA-256: 205829384cc002841dd5c520c0cc61d4ac98ad91cf17f6e7cc6e391ff101d0ff
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability, specifically targeting Adobe Reader's XFA forms. ClamAV identified it as Js.Exploit.HTML-30, indicating embedded JavaScript exploitation. The embedded URL, while seemingly benign, is part of the exploit structure. The JavaScript payload is obfuscated but likely intended to download and execute a second-stage payload.

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/

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