PDF malware analysis — malicious · 4fda00e5333e4fb0

MALICIOUS

PDF

1.4 KB

MD5: c4cf43f2bc6b5bb011e82cf4e2a9d319 SHA-1: 8036530142e648b25358ac112d5144b22f6aca32 SHA-256: 4fda00e5333e4fb07e2ad9beb0e44c11a5229425264334373db6b58fb2e5248d

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

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 likely intended to download and execute a secondary payload. The heuristic firings strongly suggest a malicious PDF exploiting a known vulnerability.

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` `7f1c8f8258c29f1191ba461e7b3f7d15aa2b1717355d4208006228231cb5d265`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1242 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` `814c3cd29586b317cfeda8e36a8f176ae652173256a7e25396b2d3ec4c65e2f8`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x482	253 bytes

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