Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb981bd178119178…

MALICIOUS

PDF

58.1 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: 3e8ab18cc750e91e0dfa891f4f0b7ac6 SHA-1: 437fe5ecfc6f583808638d81e62c7131227d2a54 SHA-256: fb981bd178119178cb3aa7fd74e9c3facfc60308b1ce8b184d420a588eadcaf4
76 Risk Score

Malware Insights

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

The critical ClamAV heuristic identified the file as 'Pdf.Dropper.Agent-7685849-0', indicating it functions as a dropper. Low-level heuristics also detected embedded JavaScript, suggesting the PDF is designed to execute malicious code. The JavaScript's likely purpose is to download and execute a second-stage payload, which is a common dropper behavior.

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7685849-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7685849-0
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
0bccfb0d4b7635f5e905811499a809746454e73ce9dc382670d7fecb4a500414		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 117043 bytes

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