Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fec212394224b40…

MALICIOUS

PDF

4.4 KB
MD5: 4828c3bf0d0ea82b6f860b50d36c914b SHA-1: 62d5e2e77d21786c40edfa49dfda7562bfeae852 SHA-256: 3fec212394224b400396553d549186bcba3b8e3a91ec47879bc929d13263aed7
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 detection as 'Pdf.Exploit.Agent-36898' strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript is likely responsible for executing a malicious payload, although its specific actions could not be determined due to obfuscation or truncation.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36898 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36898
  • 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: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0020_000.js
ba6593b67d159555799924002d4a9b4694e69ba7f5e5a499174b3ec941617e58		 pdf-javascript-stream PDF /JS object 20 at offset 0xDEC 248 bytes

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