Technically, if you search for the "Vollversion" (full version) on the official site, you are downloading this trial version. It is functionally identical to the paid version, but you are legally expected to purchase a license for continued use.
If you are looking for "WinRAR Vollversion kostenlos," you have two safe paths: winrar vollversion kostenlos
WinRAR has a unique business model. After the 40-day trial ends, the program continues to work fully with no features locked. You only get a persistent nag screen reminding you to buy a license. This leads many users to believe it's "free," but legally, you are expected to purchase it for continued use. Technically, if you search for the "Vollversion" (full