adobe_pdf_1page.js

/* Extract Pages to Folder */

// regular expression acquire the base name of file
var re = /.*\/|\.pdf$/ig;

// filename is the base name of the file Acrobat is working on
var filename = this.path.replace(re,"");

try {
  for ( var i = 0; i < 1; i++) {
    this.extractPages ({
      nStart: i,
      cPath: "/F/temp/"+filename+"_" + i +".pdf"
    });
  }
} catch (e) { 
  console.println("Aborted: " + e); 
}