PDF malware analysis — malicious · 43025d26c84826d6

MALICIOUS

PDF

1.4 KB

MD5: d0fb5aac32f46a122fb1acf262b1b863 SHA-1: b0f05953158dfb4817d7e6cd14dadc7c476023cc SHA-256: 43025d26c84826d63b3175ae22d6365806d44b6a908d4217ccabe7278d1c5b94

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. A critical heuristic firing for CVE-2009-4324, specifically related to media.newPlayer, suggests exploitation of this vulnerability. The unescape() call further points to obfuscated JavaScript intended to execute malicious code. The primary intent appears to be exploiting this known vulnerability to download and execute a secondary payload, although the exact nature of the payload cannot be determined from the provided evidence.

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` `d4bccc5ad544c55ba83ad0107184ef8ef8468900cf9f3394ced04bdb54d7bf1e`	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` `ccb523d2cc3e90cb3d3b05f62664f99d68534c4fd8a20c0f6bbe0820c7433448`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x485	259 bytes

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