Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73104a13d9706ad…

MALICIOUS

PDF

45.0 KB
MD5: be77ac252e2c7590ccf5ad5735dfbc64 SHA-1: e9efd1f3a8a6ff14113efdcdd6dffd3c5ec30cd8 SHA-256: f73104a13d9706ad8e97e8b7087d2e5851e3e0c1b7f1f862d9ac7d54c73a31f4
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings and the presence of JS streams. ClamAV detection as 'Pdf.Exploit.Agent-36128' strongly suggests exploitation of a known PDF vulnerability. The JavaScript is likely responsible for executing a malicious payload, possibly by downloading additional malware or redirecting the user to a malicious site. The document body content is not indicative of a specific lure.

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36128 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36128
  • 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0008_000.js
1615cf33efe325e2559fe05f05c0fb68b101ceee535d2b856182b3e232eac3ae		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
3a31e0b3d415b46103bbbca0d8afcab1a57b5bc14a0e4173187b1e5dc42302cd		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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