Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbfacf79da2318fa…

MALICIOUS

PDF

24.2 KB
MD5: b9a3c2a44b6fb15673a393271ae08fed SHA-1: da2f2010f6104b15bc28b9de8cea8dd66be76487 SHA-256: cbfacf79da2318fac8e551423e151bf7786e7249cb6fcc5e4c5ee42b66c51aea
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059.001 PowerShell

The sample is a PDF file identified as malicious by ClamAV, specifically detecting it as Pdf.Exploit.Agent-36821. Static analysis indicates the presence of an XFA form and a critical vulnerability exploit for CVE-2010-0188, which targets Adobe Reader's LibTIFF component. The embedded URL, though obfuscated, points to an XFA schema, reinforcing the attack vector. The primary attack pattern involves luring the user into opening a malicious PDF that exploits a known vulnerability to execute a payload.

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/