Malicious PDF — malware analysis report

Static analysis result for SHA-256 acccc3baae81eaa9…

MALICIOUS

PDF

25.5 KB Created: 2019-05-03 05:11:53 +01:00 Authoring application: mPDF 5.7
MD5: c744518e1e984ef8b122534d87061842 SHA-1: 8c6ab43e4eb6ea14e5685081653cc18a321e8732 SHA-256: acccc3baae81eaa9d538fabe2184e687e13363398da215b75aebd967320750a2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links pointing to external PDFs on the domain 'cefasfese.4pu.com'. This is indicative of a link farm or SEO poisoning attack, designed to drive traffic to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9716

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://cefasfese.4pu.com/8739732733738738/Funk-and-Wagnalls-Standard-Dictionary-of-Folklore-Mythology-and-Legend-by-Maria-Leach.pdf
    • http://cefasfese.4pu.com/8739732734732739/Funk-and-Wagnalls-Standard-Dictionary-by-Peter-Funk.pdf
    • http://cefasfese.4pu.com/8739732736730731/Charlie-Brown-s-Cyclopedia-Vol-12-Featuring-Holidays-by-Funk-amp-Wagnalls.pdf
    • http://cefasfese.4pu.com/8739732735739730/Charlie-Brown-s-Cyclopedia-Vol-8-Featuring-Stars-and-Planets-by-Funk-amp-Wagnalls.pdf
    • http://cefasfese.4pu.com/8739732735739739/Charlie-Brown-s-Cyclopedia-Vol-5-Featuring-Boats-and-Other-Things-that-Float-by-Funk-amp-Wagnalls.pdf
    • http://cefasfese.4pu.com/8739732735731732/Charlie-Brown-s-Cyclopedia-Vol-3-Featuring-All-Kinds-of-Animals-from-Dinosaurs-to-Elephants-by-Funk-amp-Wagnalls.pdf
    • http://cefasfese.4pu.com/3731732734730739/The-Thing-at-the-Foot-of-the-Bed-by-Maria-Leach.pdf
    • http://cefasfese.4pu.com/5731739739738736/Dictionary-of-Classical-Mythology-by-Jennifer-R-March.pdf
    • http://cefasfese.4pu.com/9730732739739731/The-Penguin-Dictionary-of-Classical-Mythology-by-Pierre-Grimal.pdf
    • http://cefasfese.4pu.com/7732731730733732/Rock-Art-in-Africa-Mythology-and-Legend-by-Jean-Loic-Le-Quellec.pdf
    • http://cefasfese.4pu.com/1731730735738735733/Education-Conflict-and-Reconciliation-International-Perspectives-Edited-by-Fiona-Leach-and-Mirad-Dunne-by-Fiona-Leach.pdf
    • http://cefasfese.4pu.com/5735739735735733/Zeldapedia---The-Legend-of-Zelda-The-Legend-of-Zelda-Bosses-the-Legend-of-Zelda-Characters-the-Legend-of-Zelda-Dungeons-the-Legend-of-Zelda-Enemies-the-Legend-of-Zelda-Images-the-Legend-of-Zelda-Items-the-Legend-of-Zelda-Locations-by-Source-Wikia.pdf
    • http://cefasfese.4pu.com/2737739735731735/The-Last-Wolf-The-Legend-of-All-Wolves-1-by-Maria-Vale.pdf
    • http://cefasfese.4pu.com/1738738731733732/Mythology-The-Wicked-Mythology-2-by-Helen-Boswell.pdf
    • http://cefasfese.4pu.com/8731736737735735/Inuit-Mythology-Mythology-by-Evelyn-Wolfson.pdf
    • http://cefasfese.4pu.com/1731735736732731730/A-Silver-Legend-The-Story-of-the-Maria-Theresa-Thaler-by-Clara-Semple.pdf
    • http://cefasfese.4pu.com/8739732734734732/Funk-Bass-A-Guide-to-the-Techniques-and-Philosophies-of-Funk-Bass-by-Chris-Kringel.pdf
    • http://cefasfese.4pu.com/2738735733736731/Mythology-Mythology-1-by-Helen-Boswell.pdf
    • http://cefasfese.4pu.com/7737730730733739/Articles-on-Norse-Mythology-in-Art-and-Literature-Including-The-Long-Dark-Tea-Time-of-the-Soul-American-Gods-Everworld-Norse-Mythology-in-Popular-Culture-the-Last-of-the-Renshai-Eight-Days-of-Luke-Runemarks-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/7733730730730736/Dictionary-of-Physics-Derived-from-the-Concise-Science-Dictionary-by-Oxford-University-Press.pdf
    • http://cefasfese.4pu.com/3731732734730739/The-Thing-at-the-Foot-of-the-Bed-