Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ebf78e1c76def4a…

MALICIOUS

PDF

1.9 KB
MD5: 7cb8c862cd17449d0a3dfc60ec28f09f SHA-1: 32bd2f6812ebd1edcb218f5900f08dec1da0153b SHA-256: 7ebf78e1c76def4a18d6b5da7726a37e8d3260cd0aa988d4842fc8720d52861a
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript T1204.001 Malicious Link

The PDF file contains embedded JavaScript that utilizes an unescape function and exploits CVE-2009-4324 via the media.newPlayer method. This JavaScript is designed to download and execute a second-stage payload. The obfuscated shellcode within the script indicates a malicious intent to compromise the user's system.

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.
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
f9f0c29eb3e1192f112542b83f8eb34fb6f10f7a86a3e97c8901222691280890
pdf-javascript-stream PDF /JS object 5 at offset 0xFA 1410 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long hex-escaped blob(s).
javascript_obj0005_001.js
7412733ee72c004abc6905de154aa9a4c342b0f53c224e80899f78c2c42a1e6d
pdf-javascript-stream PDF /JS object 5 at offset 0xFA 473 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).