Malicious PDF — malware analysis report

Static analysis result for SHA-256 e139e7c2bd699081…

MALICIOUS

PDF

24.2 KB
MD5: 2b2322dac24773d75215f8980e19a755 SHA-1: 81278f86c32f108956ff661edd031edbadf76e49 SHA-256: e139e7c2bd6990818084d18bab18d6eb538daec4b1b76d57036d194812ef5226
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1566.001 Phishing: Spearphishing Attachment

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability, which is known to target Adobe Reader's XFA form processing. The heuristic firings confirm the presence of an XFA form and the specific exploit. The embedded URL, while not directly malicious in reputation, is part of the XFA template structure and likely used in the exploit chain. The document body contains obfuscated JavaScript, typical of exploit delivery mechanisms.

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/