that appears to be a porn video download routine, almost certainly carries malware
it also looks like it was placed on the Google App store and quickly removed due to its nature
The fact its trying to update suggests you've got some kind of existing infection on that phone..........I know little about cleaning up Android devices, but you could start by installing and running some security software on it - try the Avast Android AV program
avast! Free Mobile Security | Antivirus & Anti-Theft App for Android mobile & tablet
however...in theory the app should appear in the list of installed programs. Go through those, and if its there simply try uninstalling it. It'll be called new xvideos or sex videos or similar. But still scan with the Avast software