Thanks so much Pondus,

I did what you said. I used the www.virustotal.com / www.metascan-online.com and the results are:

https://www.virustotal.com/es/file/7edea678cd63c5ef8186c1555b20bdc387213b4476af4bc16bbb54805b8b7f94/analysis/
https://www.metascan-online.com/#!/results/file/9d840b8ee57b4453b3f187da38973bee/regular

It clearly seems to be an issue in there but I don’t know what to do now. Maybe delete that apk? (delete that apk (GoogleSearch.apk or classes.dex ) would be impossible since they belong to the system). Or maybe are there another tool to remove it? (I don’t know any).

I post this in Avast mobil products forum section as you said. By the way can you tell me your opinion about this and the results of the virustotal and metascan?

Thanks so much! ;D ;D