PDF malware analysis — malicious · 9fc916efcb724d21

MALICIOUS

PDF

1.4 KB

MD5: 4688b72b9e5b86e3e1f8127a723e5c7f SHA-1: 1f28c2f83bee9e5fd9090bbb5e8cc6f407bc9a26 SHA-256: 9fc916efcb724d215f961e08ec6c3610916d4f39acc2e9515e4074d2ad14beaf

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability related to media.newPlayer. The JavaScript is obfuscated, but the presence of the unescape() function and the specific CVE exploit indicate malicious intent. The primary goal appears to be the execution of arbitrary code via the exploit.

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` `4ca7d2672927d57db9a0bf6cbe2b9aa068bee5e09234c456e4b9141f6f083ae3`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x2B2	966 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 0x511	70 bytes

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