Some people got is “a possible malware” opening my site?

Hi,
I tried to show js problem at my https://streamgeeks-rebranded-dev.cloudns.cl/ site
located at AWS, ubuntu, 20 Apache/2.4
But I got a feedback from one of users :

After discussion I got link :

https://www.virustotal.com/gui/url/f07ad9409e7b60633952021af9292753cc142f2a5675055fdbb19f8b563e0132/detection

Code (markup):

and got some errors report :

Avira (no cloud) Phishing
Netcraft - Malicious

Code (markup):

Which steps have I to take ? If it some bad code inside of my site ? Or something wrong in ubuntu 20/apache/mysql ?


Also are there some apps/tools for my Kubuntu 18 on my laptop to see these problems working with my site ?

Thanks!

 

From the link posted, 3 security systems flagged your website. Out of like 81 other security systems.

In my experience, it could be a false positive. It happens alot. I experienced this with Google Search Console a few times.

What I do is:

• Scan my website thoroughly
• When I'm sure there is no Malware...
• I submit a report either saying "I have fixed the issue" or "There was no issue and they should reconsider".

This will get the website report clean

 

Thanks for your feedback!
1) Which tools have I to use to scan my website thoroughly?

2) How can I be sure that I have no any Malware and where have I to write this report?