I just tried the code below and it worked my org with bundle version 40 and it worked, so not a Locker service issue. Seems to be a problem on your side.
How did you load this component in your org? Did you load it using ‘Deploy to Salesforce button’. If not, I suspect you didn’t load/upload the static resources properly. Do you see static resource ‘lcins1_pdfjs’ in your org? Are there errors thrown in console log?