PDF malware analysis — malicious · ef3ba792dc417d46

MALICIOUS

PDF

2.2 KB

MD5: af019ddc2f53d133ff1204ddee18b90b SHA-1: 69d8f3af8882ec48e4c4c6cb73e4176a9961d6ec SHA-256: ef3ba792dc417d46c7e3afe993081e2332f633a14b139403a5fdb07639527e81

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a critical CVE_2009_4324 (media.newPlayer) firing suggests exploitation of a specific PDF vulnerability. The PDF_EVAL heuristic and the suspicious nature of the extracted JavaScript (long encoded blob, script obfuscation) indicate that the script is likely designed to execute arbitrary code, potentially downloading and running a second-stage payload. No specific family could be identified.

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` `a28f941b61bbc1a20f9e9e90a45d8deb09832ffb6172674a9399b82e32d4b251`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	1771 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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