Over 60% of non-genuine software contains embedded malware, including Trojans that can grant remote control of your computer to steal financial data.

If you want to use After Effects without immediate cost or safely, consider these official options:

The 2017 release (version 14.x) was a milestone update that introduced several features still vital today: After Effects CC Review and New Features

Seeking a "free" version of After Effects CC 2017 through unofficial sites or torrents carries significant dangers:

Significant discounts are available on the Adobe Students & Teachers page, making the software much more affordable. Why Users Still Look for After Effects CC 2017

Active subscribers can sometimes access older versions through the Creative Cloud Desktop app, though Adobe typically only supports the current and one previous major version.