Is there any precaution to avoid this malware?
Yep.
Scan
whatever you download if it has not been verified clean by other members of the forum here.
Edit2: Here's a link for individual file online virus scanning:
https://www.virustotal.com/ for that purpose.
No exclusions, no exceptions.
Edit: BCX, have some mercy. Not everyone starts out as a jaded, paranoid watchdog. In fact, when you get ripped off next and you look for commiseration, i hope you get people giving you your response back at you.