Malicious PDF — malware analysis report

Static analysis result for SHA-256 20c4a4aa65ef9659…

MALICIOUS

PDF

9.2 KB
MD5: 06672bda7055c19f21d482a007bf746f SHA-1: cbca81b73200cf302e9e32c5d12903b0b9a5702d SHA-256: 20c4a4aa65ef9659d503c373549e0b9bf09e738fe85904e54d4c7efe4ea7c01e
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV also flagged it with 'Heuristics.PDF.ObfuscatedNameObject', suggesting obfuscation techniques are in use. The embedded JavaScript is likely used to exploit vulnerabilities within the PDF reader or to download and execute a secondary payload. The exact nature of the exploit or payload cannot be determined due to the lack of a document body and the obfuscated nature of the script.

Heuristics 4

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.