Malicious PDF — malware analysis report

Static analysis result for SHA-256 a92702914f2e900a…

MALICIOUS

PDF

99.4 KB
MD5: f157d14c22730ed9bb0f1bed3adcb1e0 SHA-1: 0e426ad3d879693087dfed74b4f0a63ff8d4ba67 SHA-256: a92702914f2e900a7f35a16b32d16639c3403e9e90a92473b2019e28d88dcd88
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The file is a PDF document flagged as malicious by ClamAV with the signature Pdf.Exploit.Dropped-78. The ML classifier also assigned a high probability of maliciousness. The presence of XFA forms is a common characteristic of exploit-laden PDFs. The document body content is heavily obfuscated and appears to be part of an exploit chain rather than user-facing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.