About uc browser

I want to ask how open a .sfd format file. uc mini browser save it's data in file having format ".sfd" .I have Googled a lot and could not find any such format though there is something about a format named ".sdf" but nothing about ".sfd". The location of file is data/data/com.en.ucbrowser/user/setting. Please if anyone could help me in this thing

from xda-developers http://ift.tt/231Cy34
via IFTTT