PDF malware analysis — malicious · e16d965bdf5aaf5b

MALICIOUS

PDF

2.5 KB

MD5: 59fa152f6a796f079c13c45c32e4e8e3 SHA-1: 19804c3a3cbb5636bd8920e92ffe26d158743626 SHA-256: e16d965bdf5aaf5b1702b678ecce5c626f8f50dae5a0f6bfb9f4e02b96ae6de7

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File T1071.001 Web Protocols: Web Protocols

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL heuristic firing suggests the JavaScript is being executed dynamically. Crucially, the CVE_2009_4324 heuristic firing points to the exploitation of a specific vulnerability related to media player functionality within PDFs. The embedded JavaScript, though partially obfuscated, likely serves to download and execute a secondary payload, which is a common technique for initial access.

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` `4e0b120c6e0d14096d488be1eb3cdd0403b1443bf77cebde92d7359b28953b14`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	2002 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 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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