Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5dc521807ee3ba…

MALICIOUS

PDF

24.3 KB
MD5: 6656d34334b5ffa4c71a580d170f4ac7 SHA-1: b0ce898497ca2b70c01506d6166f4b8e2e741553 SHA-256: 2a5dc521807ee3ba935fe127af61712f015e53cfdf8a2bfc8756ae0ecd520dcb
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1566.002 Phishing: Spearphishing Attachment

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting XFA forms within Adobe Reader. ClamAV also identified it as Js.Exploit.HTML-30, indicating a JavaScript-based exploit. The embedded URL, while seemingly benign, is associated with XFA templates and likely part of the exploit chain. The exploit's purpose is to execute arbitrary code, likely to download and run 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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