If you don't need a static PDF, digital tools often offer better searchability: Google Playhttps://play.google.com Bangla to Bangla Dictionary - Apps on Google Play
The current gold standard for spellings and modern usage, compiled under the guidance of scholars like Jamil Choudhury.
This platform hosts high-quality scans of various editions, including the Bangla Academy Adhunik Bangla Abhidhan (2016) . You can also find the Bibartanmulak Bangla Abhidhan (Evolutionary Dictionary) in three volumes.