Malicious PDF — malware analysis report

Static analysis result for SHA-256 857587da5c789215…

MALICIOUS

PDF

20.2 KB
MD5: 06f93139e6ed5718fff2fa73a5b0be67 SHA-1: d4db32dfdf515ca0a04d5e3aa0598f80c49b3f54 SHA-256: 857587da5c789215811297c5c940512e18f2d576420530592336e48641430b6c
160 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics, including a critical finding for the CVE-2010-0188 exploit targeting Adobe Reader's LibTIFF component within XFA forms. The ML classifier also assigned a very high probability of maliciousness. The embedded URL, while seemingly benign, is present within the document structure, and the exploit's nature suggests it's used to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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-36826 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36826
  • 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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