You do not need to risk malware. Here is how professionals handle the "Nexus 2.5.9 + expansions" workflow legally:
Many users searching for the .rar file do so because their current Nexus setup fails to load expansions. Here are the top fixes for "Expansion not found" errors in version 2.5.9: refx nexus 2 5 9 vsti expansionsair rarrefx nexus 2 5
ReFX Nexus is a proprietary ROM synthesizer plugin (Virtual Studio Technology instrument, or VSTi) known for its high-quality presets and ease of use. Version 2.5.9 was a significant late-stage update in the Nexus 2 lifecycle before the eventual release of Nexus 3. You do not need to risk malware
If you legitimately own Nexus 2 expansions but can't run Nexus 2, you can: refx nexus 2 5 9 vsti expansionsair rarrefx nexus 2 5