PDF malware analysis — malicious · 52a388d5bc3d8302

MALICIOUS

PDF

1.4 KB

MD5: c41d0d6e9506b8a64929d835442bbe2e SHA-1: 6762be13bd7f1b745e40923b4a7d0754549f6730 SHA-256: 52a388d5bc3d8302e367b50032f093ca9e2d8d6d2016955d2a891f702cd9dfb8

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes an unescape function and targets the media.newPlayer object, indicating exploitation of CVE-2009-4324. This technique is commonly used to download and execute further malicious content. The presence of multiple JavaScript streams and a high heuristic score for the exploit further support this conclusion. No specific family could be identified.

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` `93abc3b5234eeac8a6ada8df7dbe4ac62bd63292ba9cca4c05731e2380db5f18`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1268 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `cc1ad5cbf367201dea599ac85dde1e2e026b1aaed41086cd12e5553884e79542`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48C	258 bytes

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