PDF malware analysis — malicious · 57ff60697da3cdc8

MALICIOUS

PDF

1.4 KB

MD5: ef6bb479d109f488f41676d222a74501 SHA-1: 2d5d8fddad7bfd32a1c6e67a5f357a1b2797eb54 SHA-256: 57ff60697da3cdc8faf99f7d4fd43ad3b64a3fced438bbb3856cb050ff88a8de

120 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings. Specifically, the 'CVE_2009_4324' heuristic firing points to the use of the media.newPlayer exploit, a known vulnerability in older PDF readers. The embedded JavaScript is likely used to download and execute a second-stage payload, although the exact script content is obfuscated. The presence of this exploit and embedded script strongly suggests a malicious intent to compromise the user's system.

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` `2b91e28ad8f855199da656c8f48a61598aec45f524023bd6d03a463dfab3f2c2`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1195 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `a93f7a1adacea7824384e1b5e279f33bbf6d4cc697477c2d45496d42ebaa7cb4`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x468	252 bytes

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