I came across another converter, and this time its online. You don't need to install any software on your system, and the conversion is almost instantaneous. Yes, Japanese also works. Go to the site, click on Browse, upload the PDF file. I uploaded a 9-page PDF document and the converted file was ready for download in less than two minutes.
The screenshots below show the original PDF on the left and the converted Word document on the right.
Click on the image above to see a magnified view. The layout is preserved quite well, but like many other PDF converters, each line has a frame around it. Not good if you are going to translate the Word document with a CAT tool. You will have to save it as a text file and start removing hard returns. Considering the hassle, I found PDF to Word, a shareware, still unbeatable, since it preserves the layout and gives you soft returns at the end of each line (see screenshot with soft returns after conversion by PDF to Word below).
The online converter here, is useful if you are traveling and wish to make a quick conversion online, and of course, it is free and quick.
Have a great day!