\documentclass[8pt,twocolumn,a4paper]{extarticle}
\usepackage[margin=2cm]{geometry}
-\usepackage[bookmarks=false,ps2pdf]{hyperref}
+\usepackage[pdfborder={0 0 0},bookmarks=false,ps2pdf]{hyperref}
\usepackage[american]{babel}
\usepackage{matex}
\usepackage{legacy_1}