Flutter Virus Scan for malicious pdf or doc file

Currently i am working on security features of Flutter app but i didn found any file scanning package on pub.dev. if user upload malicious file there is no scanner package to check the file is whether malicious file or not please help

I don’t think that it is reasonably to do such a check inside the app. That should better be done on the backend side IMHO.
Did you search if there is such a thing or an API in native Android/iOS?