Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ebd9e57fba4638…

MALICIOUS

PDF

24.1 KB
MD5: 3ff20e0877140785b20e4df430283c2b SHA-1: 71de75679c4c463a988dbf4177d59dd17a037281 SHA-256: d1ebd9e57fba4638652c737f19f52cf6f66a09072ff35b4de13ed2127cc127e6
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The sample is a PDF file that contains an XFA form, which is a known vector for exploiting vulnerabilities in Adobe Reader. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of the LibTIFF vulnerability within XFA forms. This exploit is designed to download and execute a malicious payload. The embedded URL, while seemingly benign, is part of the XFA structure and could be used in conjunction with the exploit.

Heuristics 4

  • 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
  • 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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