It is not very difficult to convert Hindi PDF file into a word file. Step by Step. So you just have to install Google translate app from playstore Open Google Translate app and select hindi to english translation for first time app users when you click camera option allow app for media access. Now open the hindi pdf take the screenshot of hindi part in pdf and crop accordingly. Now open google translate app click on camera and then import the screenshots one by one. Then select the hindi text and translate from hindi to english. Now you will get the hindi text you can copy paste anywhere. Thanks
For giving it a try and have a nice translation job.