Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e3c9f655d18694…

MALICIOUS

PDF

45.0 KB
MD5: 1f33381e2ef8e591a25182abb4d5d9eb SHA-1: 97087196213d56f5e2c6e42880abf156c7bdcb60 SHA-256: 92e3c9f655d18694d33cdb6897ccf92fdd5d71bd5666515a423b58423af63162
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 including 'PDF_JAVASCRIPT' and 'PDF_JS'. ClamAV detection 'Pdf.Exploit.Agent-36128' confirms its malicious nature. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to execute arbitrary code, leading to the download or execution of a secondary 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
cd40cc8501c1d15c560abbaabbd560cef5a95e4a7f2e2454876b6a826052eed5		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
aa14dc27c814eaa50a8b8d65501fb96b03092f55e5b8083fa5b35c7d9f7e3188		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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