http://penguinpills.sourceforge.net/
Penguin Pills provides a graphical interface for a number of Linux command line anti-virus scanners. The Penguin Pills GUI offers drag and drop file scanning, context menu scanning, simplified signature updating and easy access from a systray icon. Penguin Pills is not an anti-virus scanner nor does it come packaged with any 3rd party AV scanner. It is merely an interface through which you can control ANY 3rd party command line scanner.
Regardless of how safe the Linux platform may be there are still numerous reasons to install anti-virus software on your system. The most obvious reason is that the majority of computers still have some form of the Windows platform installed on them. And even if a virus can't infect your pc it doesn't mean that you can't accidentally infect someone else's system by emailing an infected file to them. It is also possible to infect a WINE installation or a virtual machine through a shared folder.
You need either compiling it or installing it from getdeb (all Ubuntu versions).
First, some dependencies have to be installed :
libqt4-test libqtgui4 libqt4-network libqtcore4 libqt4-dbus libqt4-xml gksu
You need an AV scanner installed too : clamav. Others are available (have a look at documentation).
I followed instructions for compiling it, but it failed. I got it from getdeb via this repository : deb http://archive.getdeb.net/ubuntu trusty-getdeb apps
Installation went smoothly from there :
apt install penguinpills and launching it with penguinpills in terminal.
The GUI launched. Then all you have to do is drag and drop a file, and click scan.
It's fast for a single file. It takes care of everything, updating AV data in the background.