Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebfcc9b78d01260…

MALICIOUS

PDF

24.1 KB
MD5: a6383c6cae9b19fa879634bcfdf1f4d7 SHA-1: e849ec55215d5a41d5201e2cfc4065e61dcfe1d8 SHA-256: 5ebfcc9b78d01260435693d4765452bd765355d7381ada8c3f925c0dc2c66907
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 detection for CVE-2010-0188, an Adobe Reader LibTIFF XFA exploit. The presence of XFA form elements and the exploit firing strongly suggest exploitation for client execution. The embedded URL, while seemingly benign, is present within the document structure and could potentially be used in a broader attack chain, such as initial delivery via spearphishing.

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-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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