Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf9973d02a6e8ae1…

MALICIOUS

PDF

24.1 KB
MD5: 39e76808e63e94bdc51e1f10f4f57277 SHA-1: c648f4c7d4a82b367b0d9da559268890518be7a3 SHA-256: cf9973d02a6e8ae127f56cc969fda5fcc2d26f9789a3c39e7eab1867d03ae2bd
128 Risk Score

Malware Insights

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

The sample is a PDF file that contains an XFA form, which is known to be vulnerable to exploitation. Specifically, the 'CVE_2010_0188' heuristic indicates a critical exploit targeting LibTIFF within Adobe Reader's XFA processing. This exploit is likely used to download and execute a second-stage payload. The embedded URL, while seemingly benign, is often used in conjunction with such exploits.

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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