Beyond the technical risks, let’s talk ethics and law.
Even if the .rar file is a genuine copy from 2018, bodybuilding science evolves. Supplement bans change. Water loading protocols get refined. By using a pirated version, you may be following advice that has since been proven dangerous or ineffective. Worse, a malicious uploader could have edited the PDF to include dangerous diuretic dosages or false drug protocols, deliberately harming competitors.