Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e043d312066c758…

MALICIOUS

PDF

2.2 KB
MD5: 68cea04a040087cc67b74b438bd49356 SHA-1: 2344abf562f96dd5781f797a43486c460e6d5f37 SHA-256: 3e043d312066c75859d3fd7fc8da9da24eea67ce399b314bc462a456d47aac24
176 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_UNESCAPE'. A critical heuristic identifies the 'media.newPlayer' object, directly linking it to the CVE-2009-4324 vulnerability. The embedded JavaScript, although obfuscated, likely aims to exploit this vulnerability to download and execute a secondary payload. The ClamAV detection further confirms its malicious nature.

Heuristics 5

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009.
  • ClamAV: Pdf.Exploit.JSCode-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.JSCode-1
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits
  • 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_obj0005_000.js
4b769a1fefaa71a574de6c41a3321f22c8cf11977b208d95d5fdb83551d2e390		 pdf-javascript-stream PDF /JS object 5 at offset 0x10A 91 bytes
javascript_obj0005_001.js
ad7bedbea6695e75b2961cc201ac0d5bfb199072ddcb5f7b492ccc5390a6719c		 pdf-javascript-stream PDF /JS object 5 at offset 0x10A 79 bytes

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