PDF malware analysis — malicious · de242f2e8beb7f77

MALICIOUS

PDF

3.1 KB Created: 2009-08-15 14:11:11 Authoring application: Google

MD5: 25389ed0848564a198ba6bdc53745e5b SHA-1: b50e6cc712ef0c8b1d3d49fefead7f09f0d40f4d SHA-256: de242f2e8beb7f77850e131daa48a49dbd72a589cdf06014231d9d120a02cea8

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF document contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The critical heuristic 'CVE_2009_4324' specifically identifies the exploitation of a vulnerability related to media player functionality within PDFs, which involves JavaScript execution. The deobfuscated JavaScript artifact 'legacy_pdfkit_stage_000.js' suggests a complex script designed to perform malicious actions, likely downloading and executing a second-stage payload. The presence of this exploit and obfuscated script strongly indicates a malicious intent.

Heuristics 4

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. (identified after JavaScript deobfuscation)
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_obj0006_000.js` `ed6d1fca6c14869f13eea5b8f466174a8eebd5020abb3057a3779778b48ff810`	pdf-javascript-stream	PDF /JS object 6 at offset 0x933	583 bytes
`legacy_pdfkit_stage_000.js` `6bf39aa26434c1221af5a131115350795d4a979d67c5a921754934940fe0ff65`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x18E	3017 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.