The document is an issue of Echip Thứ 3 magazine from April 26, 2011. It was packed and uploaded by Hiphopboy and shared on the website Dangduc.info. The magazine contains several pages with the label Echip Thứ 3 [SỐ 527 - NGÀY 26 THÁNG 4 NĂM 2011] and a note attributing its upload to Hiphopboy and sharing on Dangduc.info at the bottom of each page.