PDF malware analysis — malicious · 567312d5e5b3f2e5

MALICIOUS

PDF

1.4 KB

MD5: a4718b5aa163fa4264c20462a2ac1731 SHA-1: 6d95f5cef74492bfffb9e7f00ed9bdc5efce6a8d SHA-256: 567312d5e5b3f2e534f570988362e2cf0cfd554fcfe5e64f594530c1a1b3d13e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is obfuscated and uses an unescape function. A critical heuristic identified the use of media.newPlayer, indicating exploitation of CVE-2009-4324. This vulnerability is commonly used to deliver secondary payloads. The extracted JavaScript streams are suspicious and likely responsible for the malicious execution.

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` `6234c29c491f5eef46f6aa86eeda9fd37cb738828a12a356e5f117703ae74f31`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1268 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` `286d0aa6a59e0548f0b317009f31c6d61ed608760b4053622fd4d186322c3fe9`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48B	256 bytes

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