PDF malware analysis — malicious · d23661e0c86ec604

MALICIOUS

PDF

1.4 KB

MD5: d71fac58def619db80d83f5cc409fd2a SHA-1: 7f4f05837bed9e1b8f67357337f93f39c3142445 SHA-256: d23661e0c86ec60435a070d93d9e72f0402eba39aeb665da3689f224a384b339

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability via the media.newPlayer object. The JavaScript is obfuscated, but the presence of unescape() calls and the critical heuristic firing strongly indicate malicious intent. The primary goal appears to be the exploitation of this specific PDF vulnerability to achieve code execution.

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` `75fa97345e95cade98a813a132fc240ec13f83cbaf8642fb30557f0b122e0df8`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1186 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` `ae51aaa8f926d80ef1471f1551d882d77fbada3596a4c72693763f4dc4871ee7`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x464	241 bytes

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