PDF malware analysis — malicious · 386411b7d60e7543

MALICIOUS

PDF

1.4 KB

MD5: c9203938ad7c92a2da9eaed56847f7c0 SHA-1: 22beaa9e10b3549fd500d1b6882cd0376ad464e4 SHA-256: 386411b7d60e75434c9c23c1d540edddf4a32e6a4d9df652ffac00f337e86b0e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF document contains embedded JavaScript, triggered by the CVE-2009-4324 vulnerability via the media.newPlayer object. The embedded JavaScript is obfuscated, but the presence of unescape() calls and the overall structure suggest it is designed to download and execute a second-stage payload. The extracted JavaScript files are the primary indicators of compromise.

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` `777fb017f4b9e8eb462533b0e2a649a14ead602ec5b0f367602b192f6f9596e0`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1269 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` `e1d398a2709a0f24df3dda3863a4ce2d87a5205247fcce8e73e1f0e770f4ec1b`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48A	249 bytes

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