Malicious PDF — malware analysis report

Static analysis result for SHA-256 16d5b27dead26b62…

MALICIOUS

PDF

13.9 KB
MD5: 159b579390255f7832701642dcf1b00a SHA-1: be774d8c802c410bc07d6989d4ab80d12b6a9943 SHA-256: 16d5b27dead26b622465c4edacac1101523285e678823ad865094dab7fddcf55
162 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is a PDF that contains an XFA form and triggers the CVE-2010-0188 exploit, which is known to be used for client-side code execution. The embedded JavaScript, although obfuscated, likely facilitates the download and execution of a secondary payload. ClamAV detection as Js.Exploit.HTML-30 further supports the malicious nature of the embedded script.

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/

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