Dear debian package maintainer, The version of zotero-standalone including in the stretch release still is trying to find executables pdftotext-Linux-x86_64 and pdfinfo-Linux-x86_64 instead of the files pdftotext and pdfinfo that are installed with poppler-utils.
As reported earlier in this bug, in the past zotero used custom executables so depending on poppler-utils and using the standard pdfinfo and pdftotext was a problem, but according to zotero developer dstillman, as of April 2015 zotero uses the standard executables included in poppler utils (See dstillman comment on https://github.com/zotero/zotero-standalone-build/issues/28). So it finally should be possible to build a debian package that resolves this issue. Best regards, Jorge