Does anyone know where I can download the pdf version of the book The Kill Order, by James Dashner for free?

The paperback version just came out, there is no way you'll get a free version, unless you go to the library. The author still owns the rights to the book and is making his livelihood through sales.

James Dashner would really appreciate it if you didn't steal from him. Seriously, why do you think you have the right to steal books? Writing is an author's JOB, it's how they put food on the table and clothe their kids. How would you feel if you worked for a year or more on something just so you had money to support yourself, and some little thief stole it because they were too cheap to pay? You do not have the right to steal books and you should be totally ashamed of yourself for trying. The more people like you that steal books the less the authors can afford to write them.

A good way to find books or any information in PDF format is to go to Google then click on advanced search options type in up the top what you are looking for then below where it says document type change it to PDF.

Try the library.

I am always gobsmacked by people who would be shocked at the notion of walking into a bookstore, taking a physical book off the shelf, and walking out without paying for it--and yet have no compunctions whatsoever about stealing the ebook. Either way, you are taking money out of the author's pocket.