I compiled latest poppler library and it aborted when I run pdfdetach -save 1 abort.pdf, this is the backtrace:

Syntax Error: End of file inside array
Syntax Error: End of file inside dictionary
Internal Error (0): Call to Object where the object was type 1, not the expected type 3

Breakpoint 2, __GI_abort () at abort.c:51
51      abort.c: No such file or directory.
(gdb) bt
#0  __GI_abort () at abort.c:51
#1  0x084d4b93 in Object::getString (this=0xffffcde0, this=0xffffcde0) at /work/poppler/poppler/Object.h:253
#2  0x084fb2d2 in AnnotRichMedia::Content::Content (this=0xf5d1f5b0, dict=0xf3f001d0) at /work/poppler/poppler/Annot.cc:6432
#3  0x0854b0df in std::make_unique<AnnotRichMedia::Content, Dict*>(Dict*&&) () at /usr/include/c++/5/bits/unique_ptr.h:765
#4  0x084fbae1 in AnnotRichMedia::initialize (this=0xf3502ea0, docA=0xf3902b90, dict=0xf3f002d0) at /work/poppler/poppler/Annot.cc:6310
#5  0x0852928d in Annots::createAnnot(Object&&, Object const*) (this=0xf5d1e970,
    dictObject=<unknown type in /work/poppler/build/utils/pdfdetach, CU 0x469504, DIE 0x4d8d15>, obj=0xffffd0e0)
    at /work/poppler/poppler/Annot.cc:6747
#6  0x08535fb3 in Annots::Annots (this=0xf5d1e970, docA=0xf3902b90, page=1, annotsObj=0xffffd180) at /work/poppler/poppler/Annot.cc:6648
#7  0x083089b8 in Page::getAnnots (this=0xf3302dc0, xrefA=0x0) at /work/poppler/poppler/Page.cc:362
#8  0x081158fa in main (argc=2, argv=0xffffd7a4) at /work/poppler/utils/pdfdetach.cc:172
(gdb) list Annot.cc:6432
6427            assets[counter] = new AnnotRichMedia::Asset;
6428
6429            Object objKey = obj2.arrayGet(i * 2);
6430            assets[counter]->fileSpec = obj2.arrayGet(i * 2 + 1);
6431
6432            assets[counter]->name = std::make_unique<GooString>( objKey.getString() );
6433            ++counter;
6434
6435          }
6436        }

the file is attached here reachabort.pdf