PDF malware analysis — malicious · 42d6054eec6c0f80

MALICIOUS

PDF

1.4 KB

MD5: 96fab7e84e0b6cd06bb5609afb6a3856 SHA-1: d5252bf85201b70ad0e2c9a5e30c2900f56c8ab4 SHA-256: 42d6054eec6c0f807f04c4f1ede350ebc7d71a140a88a417b8bd00f84f90b623

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains embedded JavaScript, which is obfuscated and uses the unescape() function. A critical heuristic firing indicates exploitation of CVE-2009-4324 via the media.newPlayer object. This suggests the script is designed to download and execute a secondary payload. No specific family could be identified, but the exploit and obfuscated JavaScript are strong indicators of 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` `d05c418018a47f309fe16974c9b4a794600912b34f5e1162fd9cb9004554cc8f`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1251 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` `9bb80888429f20390f5f91b0cb514c2f3dd734a53cdeacae41a1d69735ee76fa`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x483	252 bytes

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