Malicious PDF — malware analysis report

Static analysis result for SHA-256 44cb6380a76aae1a…

MALICIOUS

PDF

45.0 KB
MD5: 20061cbdff685e513b8d8aeec365412a SHA-1: 6424c39efd3c5ae9482a4da860655e578334413d SHA-256: 44cb6380a76aae1a1a7b74d9cebf022f803cb34922bd209305e432469e2fd20f
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 including 'PDF_JAVASCRIPT' and 'PDF_JS'. ClamAV detection as 'Pdf.Exploit.Agent-36128' strongly suggests a known exploit. The embedded JavaScript is likely responsible for executing the exploit, leading to a malicious outcome. 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
6d21ff8e890f196e7cf26c3172400379b3eb795ee0a2751ce9b6f780f596598d		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
18b7b34d5cae4ab5ad221198bd7a9c119527fb8527f7cbdf7597cd6a98c951f6		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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