You want Premam (2015 - Malayalam, dubbed in Bengali).
The filename premamar20091080pwebdlbengalix264skymov refers to the , a popular romantic tragedy directed by Raj Chakraborty. premamar20091080pwebdlbengalix264skymov
The source of the file is a "Web Download," meaning it was ripped from a legal streaming service like Hoichoi or Amazon Prime Video, rather than a physical disc. You want Premam (2015 - Malayalam, dubbed in Bengali)
You can find cast details and trivia on the Prem Amar IMDb page. You want Premam (2015 - Malayalam