Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e52c811d2056795…

MALICIOUS

PDF

45.0 KB
MD5: 920cc2a05458d225d574063cbfd1c576 SHA-1: b98d9e766e9542db83be5ca509222d9c9aa3cc12 SHA-256: 9e52c811d2056795821bcbdea6ab89aaf778cce936a5e68cb986954d591c5783
76 Risk Score

Malware Insights

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

The critical ClamAV heuristic indicates the file is a known PDF exploit (Pdf.Exploit.Agent-36128). The presence of embedded JavaScript streams further supports this, suggesting the PDF is designed to execute malicious code upon opening. The JavaScript is likely responsible for downloading and executing a second-stage payload.

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
353c1f21af8d64504af9d1ae17edb8dd99abb17c17b5a2792f7e51d13a0fc0dc		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
86de1257e302204373b5e6cba350fb5891bb27a7b1ddaab25bea3dc565b2f065		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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