• PDF can have embedded JavaScript code, and Adobe executes this.
  • The JS Engine, SpiderMonkey, executes this embedded JS Script using EScript.api in Adobe.
    • JS Engine, SpiderMonkey used by Adobe is implemented in C++.
  • If the URL is defined in the PDF, Adobe performs related to URL and Internet access using IA32.api.

image [Fig 1] The process of handling JS script embedded in PDF at Adobe Acrobat Reader DC

  • We can send the two types of URL to Adobe with PDF.
    1. base URL
      • The base URL means the base of the URL such as https://….
      • We can send the base URL to Adobe by setting the object in the PDF.
       11 0 obj
 <<
 /Base <FEFF68747470733A2F2F7777772E61612E636F6D2F414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141412F>
 >>
 endobj
    2. relative URL
      • The relative URL means the URL comes out after the base URL.
      • We can send a relative URL to Adobe by passing the relative URL as the parameter of functions related to Internet access with JS script embedded in the PDF.
      • We can do this using the functions, this.submitForm(), app.launchURL(), etc.
       try {
   this.submitForm('relative URL');
 } catch (err) { }