test.js

var WebPage = require('webpage');
page = WebPage.create();

page.viewportSize = { width: 1920,  height: 1200 };

phantom.addCookie({
  name   : 'access_token',
  value  : '08cd1e32-16dd-4b99-b976-e3bb8c922421',
  domain : '/',
});

var url = 'http://localhost:8000/reports/acquisition/1411772400000';
page.open(url);
page.onLoadFinished = function() {
  page.render('screenshot.pdf');
  phantom.exit();
};

page.onConsoleMessage = function(msg, lineNum, sourceId) {
  console.log(msg);
};