Malicious PDF — malware analysis report

Static analysis result for SHA-256 d28b89af00c70da7…

MALICIOUS

PDF

45.0 KB
MD5: 7f7b676b8fc231c89d80c65b77f678d5 SHA-1: 6ff7c5d2d71e3e42f63b03d419590e5c0a9958e8 SHA-256: d28b89af00c70da747b801077e6847ced1708b976357a207fbe3a29a1359e51e
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings and the presence of extracted JS streams. ClamAV detection as 'Pdf.Exploit.Agent-36128' strongly suggests exploitation of a PDF vulnerability. The embedded JavaScript is likely responsible for executing a malicious payload, although its specific actions are not detailed in the provided evidence. 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
e27b8b36995d6585884f83613de16e91572bd88798dcc0bdaca9eebf1767e1d8		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
99274d9a7f517024daebcf06514378bee2acda3d1327478983f874c2dd71f188		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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