Malicious PDF — malware analysis report

Static analysis result for SHA-256 81fd303d7dbc80f8…

MALICIOUS

PDF

24.2 KB
MD5: 6a4c3a64500c3bd9aee9604b675fcb08 SHA-1: 0aeba9f974b9310e02f7ae9e76142c0353efb39f SHA-256: 81fd303d7dbc80f821152011c1d93c677e571dbcd6c2e279051891614e5b1b22
128 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.002 Phishing: Spearphishing Attachment

The sample is a PDF file that contains an XFA form, which is a known vector for exploiting Adobe Reader vulnerabilities. Specifically, the CVE-2010-0188 heuristic indicates exploitation of the LibTIFF component within Adobe Reader. This exploit is likely used to download and execute a second-stage payload. The embedded URL, while benign in reputation, is part of the XFA template structure.

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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