This isn’t like downloading an MP3 from 2005. Shutterstock actively pursues theft of vector assets because their entire business model depends on licensing.
If you are a developer building a legitimate automation tool (a real "downloader" for your own assets), you can use Shutterstock’s official API. The Shutterstock API allows developers to programmatically download assets that a user has already licensed. This is the only legal way to automate EPS downloads. shutterstock eps link downloader