See this example properly formatted in the QUT Cite tool.
Standard in-text citation examples are in Getting started - In-text citation.
Author A. Title [format]. Place of publication: Publisher; Year [cited Year Month Day]. Available from: https://www.xxxx.xxx.xx
Goodyear C. BHP Billiton: Climate Change Policy [pdf file from the Internet]. [place unknown]: BHP Billiton; 2007 [cited 2017 Dec 11]. Available from: https://www.sec.gov/Archives/edgar/data/811809/000081180907000139/climatechangepolicy.pdf
Use this format for pdfs and other documents retrieved or downloaded from the internet. For websites in HTML format see Internet sources - Web page.