Malicious PDF — malware analysis report

Static analysis result for SHA-256 82870eee1f0d96fb…

MALICIOUS

PDF

24.1 KB
MD5: 4bcc3b480b0e1df68e4dc3a5f5503d7b SHA-1: 8b0bc0fb2fa676ee9ed359312c81aa535ea36fc9 SHA-256: 82870eee1f0d96fb622026e1524be6387cfada16626b625bd4ebe155ad01adff
128 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Phishing: Spearphishing Attachment

The sample is a PDF file that contains an XFA form, which is a known vector for exploiting vulnerabilities. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of Adobe Reader's LibTIFF component. The embedded URL, while not directly malicious in reputation, is part of the XFA template structure. The ClamAV detection further confirms its malicious nature. The attack pattern is consistent with exploiting a client-side vulnerability to execute arbitrary code.

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/