Malicious PDF — malware analysis report

Static analysis result for SHA-256 660c7ff014539efc…

MALICIOUS

PDF

24.4 KB
MD5: 60196079f9a248971b337caf5416a867 SHA-1: 892fcfc7ab1524ccd78c94b52e5bae6eb335c6f3 SHA-256: 660c7ff014539efc8a15f9fc98ca595323e55a59d0e661f9833b7ac808a38035
162 Risk Score

Malware Insights

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

The file is a PDF document that contains an XFA form, which is known to be vulnerable to exploits. Specifically, the CVE-2010-0188 exploit was detected, targeting a vulnerability in Adobe Reader's handling of LibTIFF images within XFA forms. This exploit allows for arbitrary code execution, and the ML classifier strongly indicates maliciousness. The embedded URL is likely related to the exploit's functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • 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/