Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6be5b50d532525c…

MALICIOUS

PDF

45.0 KB
MD5: b3ea2e6add5f74aaaab1e62a5492eab5 SHA-1: cb7aa51c43a2d7dca2afeaa0ae5957c0226aafca SHA-256: f6be5b50d532525c336d2c1696b1814ad19e4c7173c1e37e7666d9169492e83a
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. ClamAV detection as 'Pdf.Exploit.Agent-36128' strongly suggests exploitation of a vulnerability within the PDF structure. 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 legitimate user-facing document.

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
abed3e533f87f76ea60ed3d1e945ff912bbd58f733dc2c196b01d63f8f9ff9dc		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
54b32a0483277702d23cbfb45c48fd0b877a64bfccbd2707fdb61a85064a977e		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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