PDF malware analysis — malicious · aacef64024b6bf33

MALICIOUS

PDF

1.4 KB

MD5: 7754555fe2c54b35de1736f9e5bc268f SHA-1: 4bd15fcf01fac918996d1a88e43883bc4593c1be SHA-256: aacef64024b6bf33018fb36fd5b6c28fe8af498c5db91b82fab544271eba66e9

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, which is triggered by the 'media.newPlayer' object, indicating exploitation of CVE-2009-4324. The JavaScript is obfuscated and uses unescape() for decoding, suggesting it's designed to download and execute a second-stage payload. The presence of multiple JavaScript streams and a suspicious extracted artifact further supports this conclusion.

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)
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.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `2527e94ca346aea4c09596eb47552b8eb2172bc6a5ce68bac10f66d0e3bbb004`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1270 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` `299f93acf6d9f3a3a66bc3c0217d289ce1766bf20553e68b506f4f9d51b9d729`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48B	260 bytes

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