PDF / .TXT malware analysis — malicious · e800c84d375ef944

MALICIOUS

PDF / .TXT

1.4 KB

MD5: c3a6c3bca90049ec1773cfa80b350c0b SHA-1: ddf8f9de0b55497b15220b2004015ab76c8a4d0a SHA-256: e800c84d375ef94407daa5605c03724a9a57cd520a1ead6102404355e444030b

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, which is obfuscated and uses the unescape() function. A critical heuristic firing indicates exploitation of CVE-2009-4324 via the media.newPlayer object. This suggests the primary goal is to leverage this vulnerability to execute arbitrary code, likely to download and run a second-stage payload.

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` `becee0bd220a37add94ce2f3b629baaa8a95228dea084e3f0bb771ff1408862d`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1274 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` `ce185ba123b59d3cb1d054adc113276f9703b0d568e0459fefdaf5852cf1a7c9`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x484	262 bytes

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