PDF malware analysis — malicious · 33a3a94cb478a55f

MALICIOUS

PDF

1.4 KB

MD5: eec713c4d7b2eedf908cc23ccd553f09 SHA-1: 55896c9ae7b529671f4c0c7356227d0c2a9198a6 SHA-256: 33a3a94cb478a55f4d6e2d6b66215d5d8006e85213c72d99fcd6831d7acd9fc1

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 exploit targeting the media.newPlayer object. The JavaScript is obfuscated using unescape(), indicating an attempt to hide malicious code. The primary function of the script is likely to download and execute a second-stage payload, although the exact details are obscured by the obfuscation.

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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `ed214d008ca7f8fad0affc792159f2b30ce479dc90c5348e0751937c74ebe0c2`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	291 bytes
`javascript_obj111712_001.js` `98a7202f458133b147ba3e0389b0d5414c20bb5d0310d039c93804743c544d59`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x2B2	984 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj111713_002.js` `d2f98bec78aa096efa5aca99b701d5e6b9a8e2cf728fb7e79bf248862bacf14b`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x51A	70 bytes

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