Kaspersky Lab has monitored between 100,000 and 300,000 otherwise clean websites in order to identify when they become distribution points for malware. The Web has become the main distribution point for malware, with the maximum recorded infection rate for monitored websites throughout the year. Malicious programs are hosted on websites; users are then tricked into running these programs manually, or exploits are used to execute the malware automatically on victim machines. The entry code entry page in the malicious entry page is usually obfuscated to prevent analysis.”]
Source: https://securelist.com/browsing-malicious-websites/36273/