File Juicer
File Juicer for macOS
Overview of Formats

Search & Extract

Images

jpg jpeg 2000 gif png pdf wmf emf tiff eps pict bmp

Video

mov mpeg avi wmv

Sound

mp3 wav System 7 au aiff

Text

ascii rtf html

From:

avi cab cache chm dmg doc emlx exe ithmb m4p mht mp3 pdf pps ppt raw swf wps xls zip and other formats

PIF, SCR, BAT - Files for Windows

PIF - Program Information File for Windows
SCR - Screen Saver for Windows
BAT - Batch file for Windows (text commands to script it).

Files of this type are usually computer viruses, sent from a PC which has your email address. Windows viruses does not infect Macs, but you should not send this file to others who use Windows

If you save the file on your hard disk (it is already there) you can test it with Clam AntiVirus or with online scanner where you can upload the file and have it investigated.

Alternatively try avast if the Clam AV does not get up and running again.