Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b21e6ee772a1573…

MALICIOUS

PDF

24.1 KB
MD5: 48cc77356755f03d1f77eb6ea9f64a8d SHA-1: 7e8d8733f639537d24a4c4ee51a64a25e5e30403 SHA-256: 4b21e6ee772a15739b6d8521757851969dcf2e14892c30aee77ae081ea0ff284
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution

The sample is a PDF document identified as malicious by ClamAV. Static analysis detected the use of XFA forms and a critical vulnerability, CVE-2010-0188, which is known to be exploited in Adobe Reader. The embedded URL, while seemingly benign, is part of the XFA template structure and likely serves as a lure or part of the exploit chain. The primary attack vector is the exploitation of the CVE-2010-0188 vulnerability when the PDF is opened in a vulnerable version of Adobe Reader.

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/