Remember: A single official PDF could be the difference between passing and failing your boards. And if you truly cannot afford it, reach out to Dr. via email—many educators grant free access to students in financial need.
While LibGen hosts many medical textbooks, official Medicosis notes are rarely uploaded there due to active DMCA protection. However, you can find similar resources like First Aid for the USMLE or Pathoma chapters.
Happy studying, and stay perfect!