PDF malware analysis — malicious · da9bbee9ca6f58a9

MALICIOUS

PDF

2.5 KB

MD5: 64f30eaceba56ffe8eae79a77d6639be SHA-1: d8ee52e2302b941d54ff447a2ead4d58bc28b777 SHA-256: da9bbee9ca6f58a9472d71bcecd1a4c8dba5140c433ddc78566fe818c97d33fb

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. A critical heuristic firing for CVE_2009_4324 (media.newPlayer) suggests exploitation of this vulnerability. The presence of eval() calls within the JavaScript (PDF_EVAL) further points to dynamic code execution. The extracted JavaScript artifacts, particularly the larger 'javascript_obj0005_000.js', likely contain obfuscated code designed to download and execute a secondary payload, 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` `5ea721a4cd6e84689ed36eec76d5bb264e6fd9565118188e8e1b1287b95171a9`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	2020 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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