PDF malware analysis — malicious · 2f71c20b0775ea18

MALICIOUS

PDF

1.4 KB

MD5: fc66ee89c9735db2cb100302669ca735 SHA-1: be2f03f0317a6a1605f43a9deff987f65cc3bd0d SHA-256: 2f71c20b0775ea18b60e0231c1ff217e93720748661b3b0bc2a4f60b83400d63

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File Execution

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability related to media.newPlayer. The JavaScript is obfuscated and likely intended to download and execute a second-stage payload. The presence of multiple JavaScript streams and the specific exploit heuristic strongly indicate malicious intent.

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. (matched in decompressed stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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.
Suspicious extracted artifact info 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `b16bc6e6e714d8e694ee4578df5db2c2b59a1ce2c9a410fe2d9b7d629a171fc7`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1230 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 base64-like blob(s).
`javascript_obj111112_001.js` `ce0e3175481f1693c95b8082c8b0f7a05284bd4c12987e2449016d27b9c3eadd`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x47A	257 bytes

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