PDF malware analysis — malicious · b97315ccdaba1514

MALICIOUS

PDF

2.3 KB

MD5: d2782fba91f1e1d40f9b13b657be079b SHA-1: 809bc3e54891d0939db3891aef5010e90205a0ba SHA-256: b97315ccdaba15149dbe61a93a376eeae74ebbf00927f93122976fef33f46b2e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File Execution

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The critical CVE_2009_4324 heuristic suggests the exploitation of a vulnerability related to media player objects. The embedded JavaScript likely attempts to download and execute a second-stage payload, although the exact mechanism is obfuscated. The presence of two extracted JavaScript files further supports this.

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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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_obj0005_000.js` `c1200f0bd4826c4c88116a7ed9ab92f1e11d8e825eff74d7bdd22282a91a60a3`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	1845 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0005_001.js` `a4a39a95112adeb7becbe348ae769bf8a4316eb18c0ca19b042a5144275ca0a0`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	42 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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