How to open a file from Scribd for Android?

Question

Android

Good evening, please tell me if it is possible to open a file that was saved on an android phone using the Scribd program, the file does not have an extension, I tried to change it to pdf, it did not work. It's just not very convenient to read on the phone, although the screen is 5 inches, it's small.
It is complicated by the fact that this file was removed from the scribd.com site, and I only have it in this state without an extension. Maybe someone has come across this before.
Android 4.1.2
Scribd 3.6.2
Thanks in advance.