Attach (recommended) or Link to PDF file here:  [test.pdf](https://akmer.aikucun.com/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3_1616477914120_83.pdf)


Configuration:
- Web browser and its version: chrome 87.0.4280.88
- Operating system and its version: windows10
- PDF.js version: 2.6.347
- Is a browser extension:

Steps to reproduce the problem:
1. just open 

What is the expected behavior? (add screenshot)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/17724610/112087066-473f8f80-8bc8-11eb-8efb-56139ec42a9c.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

}
            if (isString(url)) {
              const baseUrl = url.split("#")[0];
              if (isString(remoteDest)) {
                url = baseUrl + "#" + remoteDest;
              } else if (Array.isArray(remoteDest)) {
                url = baseUrl + "#" + JSON.stringify(remoteDest);
              }
            }
          }
          
          const newWindow = action.get("NewWindow");
          if (isBool(newWindow)) {
            resultObj.newWindow = newWindow;
          }
          break;
        case "Named":
          const namedAction = action.get("N");
          if (isName(namedAction)) {
            resultObj.action = namedAction.name;
          }
          break;
        case "JavaScript":
          const jsAction = action.get("JS");
          let js;
          if (isStream(jsAction)) {
            js = bytesToString(jsAction.getBytes());
          } else if (isString(jsAction)) {
            js = jsAction;
          }