What is the legality of reading unpaid e-book/research paper (ex. from site like genlib/sci-hub) (In my case, in Indonesia). is someone eligible to be charged because they downloaded the e-book/research paper from that site? or is it just permissible as long as they keep it themself (They dont sell it & They dont share it to many people)?

Edit:

1. Add "research paper from sci-hub"
2. Add country of origin: Indonesia