Copying File From S3 To EC2 by User Data Approach

I have been searching solution for this task, all I find CLI approaches which I don't want.

I simply want:

I have an S3 Bucket, which has one private file, file can be an image/zip file anything.

And I want when I launch any EC2 instance it should have taken that file from S3 bucket to EC2 instance directory.

And for this, I want to use only EC2 User Data Approach.