Did you read my post above yours? I recommend you follow the advice in my earlier post.
Simple put, Apple attempts to provide all the malware detection and removal you need in Mac OS X. Malwarebytes has come to be accepted as the only malware detector you should consider. For those pestered by browser attacks consider Malwarebytes.
Discusses Mac OS X operating system wide malware detection and removal
See Linc Davis, thomas_r., and etresoft comprehensive write ups on
https://discussions.apple.com/thread/5728993
etresoft steps back and states that the frequency of malware is increasing on the Mac. thomas_r. reveals his involvement in Malwarebytes as Director of Mac Offerings
https://discussions.apple.com/thread/7343915
https://discussions.apple.com/thread/7940701?answerId=31698261022#31698261022
"Malwarebytes Anti-Malware for Mac Removes adware and malware Revives your Mac"
https://www.malwarebytes.org/antimalware/mac/
"visibility & protection to the core"
https://objective-see.com/
Web browser malware removal:
see Esquared, Linc Davis
https://discussions.apple.com/thread/6689392
Fixing Safari malware attacks. See thunderzzz approach.
https://discussions.apple.com/thread/7307569
The best techniques for securing your Mac from the professionals.
http://www.macworld.com/article/2048160/how-the-nsa-snoop-proofs-its-macs.html
phishing
"fake" panic warnings
https://discussions.apple.com/docs/DOC-8771