Files with this naming structure are typically created and shared online. In this specific case, it points to a subtitle file. According to archival data from subtitle sites, a file with an almost identical name, Manvat.Murders.S01E08.The.Truth.Behind.The.Truth.MARATHI.SONYLIV.WEB-DL.DUAL.DDP5.1.Atmos.H.264-Spidey.en[sdh] , is indeed an English subtitle for the eighth episode of the series. Therefore, a search for this term is almost certainly an attempt to find subtitles for the eighth episode of "Manvat Murders."
The official SonyLIV app offers a legal, built-in "Download" feature. This allows users to download the complete season safely to their mobile devices for offline viewing without risking malware or violating copyright laws.