Many medical schools subscribe to for their students. Check with your academic support dean. You may already have free access and not know it.
Searching for UWorld Step 1 materials on Google Drive often leads to PDF compilations of the QBank's questions and explanations. While UWorld is a subscription-based online platform, many students use offline PDF versions for quick reference or additional study UWorld Step 1 Google Drive Links Uworld Step 1 Pdf Google Drive
Be cautious: Many such links are: