Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b5c579f9c3ada00…

MALICIOUS

PDF

18.2 KB Created: 2019-05-03 20:06:12 +01:00 Authoring application: mPDF 5.7
MD5: 1061ee2f4923556cb3882985d9c0adb1 SHA-1: 1dbb6448d7c12bd6aec16c5abd4fddb901482d6b SHA-256: 4b5c579f9c3ada007dd28995e918130b345cc556cca54d2d4621abf72a8e742f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious. While the specific URLs extracted were classified as benign, the sheer volume and the heuristic firing indicate a malicious intent to leverage these links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9807

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
    • http://cefasfese.4pu.com/5737730736733735/Tambour-Battant-Poesie-by-Maurice-Cadet.pdf
    • http://cefasfese.4pu.com/6735735739737732/The-Life-of-the-Ant-by-Maurice-Maeterlinck-by-Maurice-Materlinck.pdf
    • http://cefasfese.4pu.com/3733734739739736/Blind-Love-The-True-Story-Of-The-Texas-Cadet-Murder-by-Peter-Meyer.pdf
    • http://cefasfese.4pu.com/2734730735732736/The-Cadet-Murder-Case-A-True-Story-of-Teen-Love-and-Deadly-Revenge-by-A-W-Gray.pdf
    • http://cefasfese.4pu.com/2736730734734/Crandolin-by-Anna-Tambour.pdf
    • http://cefasfese.4pu.com/5737730736732734/Picking-Blueberries-by-Anna-Tambour.pdf
    • http://cefasfese.4pu.com/5737730735736738/Tambour-Work-by-Yusai-Fukuyama.pdf
    • http://cefasfese.4pu.com/5737730736737736/Valley-of-the-Sugars-of-Salt-by-Anna-Tambour.pdf
    • http://cefasfese.4pu.com/5737730735737735/Tambour-Beading-With-A-Ring-Frame-by-Maisie-Jarratt.pdf
    • http://cefasfese.4pu.com/5737730736738737/Deutsche-Kriegslieder-Aus-Dem-Jahre-Des-Heils-1914-Mit-Erlauterungen-in-Grundlicher-Prosa-by-Rudolf-Tambour.pdf
    • http://cefasfese.4pu.com/5737730737735734/Deutsche-Kriegslieder-Aus-Dem-Jahre-Des-Heils-1914-Mit-Erlauterungen-in-Grundlicher-Prosa-by-Rudolf-Tambour.pdf
    • http://cefasfese.4pu.com/6733737730736735/Po-sie-Opus-1-by-St-phane-Barbery.pdf
    • http://cefasfese.4pu.com/3739739730730738/The-Art-of-Maurice-Sendak-1980-to-Present-by-Maurice-Sendak.pdf
    • http://cefasfese.4pu.com/6734733732733734/Whisky-parole-amp-una-pala-Poesie-per-cuori-in-fiamme-I-by-R-H-Sin.pdf
    • http://cefasfese.4pu.com/8736734739734734/Unerhort-Konkrete-Und-Visuelle-Poesie-Aachen-98-by-Carola-Dahmen.pdf
    • http://cefasfese.4pu.com/9730739731734736/Helge-Leiberg-Poesie-amp-Pose-Bronzen-by-J-rgen-Schilling.pdf
    • http://cefasfese.4pu.com/6738739732734732/Contes-pour-moulins-eau-Po-sie-de-comptoir-by-Eric-Birot.pdf
    • http://cefasfese.4pu.com/9738739738739738/Poesie-Und-Wirklichkeit-In-Joseph-Von-Eichendorffs-Ahnung-Und-Gegenwart-by-Konrad-Schaum.pdf
    • http://cefasfese.4pu.com/9735730735731735/Mehr-Laufmaschen-im-Spiel-das-wir-Leben-nennen-Poesie-des-Zorns-by-Sam-Wood.pdf
    • http://cefasfese.4pu.com/1730731736731737732/Poesie-von-Herzen-Die-sch-nsten-deutschen-Gedichte-zum-Tr-umen-und-Verweilen-by-Adelbert-von-Chamisso.pdf

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