Can this marriage be annulled? How can I proceed?

I discontinued my education when i was in intermediate and joined a job and worked for 4 years. During that time I met a lady elder to me by 10 years (which I don’t know then). We were friends and she helped me so much financially (it was just help and i always had a thought of repaying). At some point she continuously asked for a relationship and unknowingly i was involved but never had an intention of marriage. I continuously told her that I don’t have the marriage intention. But I trusted her and after sometime i realised and declined her requests and asked not to send any money. In 2016 she emotionally blackmailed me that she’ll die if I don’t sign on the register marriage document as per hindu marriage act . Actually no marriage was happened other than the registration, a fake invitation card was submitted as proof. I signed on the document and we lived in two different states. Now she along with her family threatening me to live with her. Can I apply for annulment of this marriage?