Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed58eceb8f4100a…

MALICIOUS

PDF

27.6 KB Created: 2019-05-05 14:11:14 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-28
MD5: e3deb8a300fc858b2d3a58b66fcc44dc SHA-1: 954d2fe576d5695810a647d191166c6cdb2bdaf4 SHA-256: 3ed58eceb8f4100ab662ff5824d306ce20ffbcc600b654ce1373e3b095871b37
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm, with many pointing to URLs that appear to be part of a content distribution scheme. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the structure and heuristics suggest the document is designed to trick users into downloading potentially malicious files via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9700

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://muicuiu.dumb1.com/7a02a05a09a02/Tasting-Colorado-Favorite-Recipes-from-the-Centennial-State-by-Michele-Morris.pdf In PDF document text
    • http://muicuiu.dumb1.com/3a02a05a09a01a04/Colorado-State-of-Mind-Colorado-Springs-Fiction-Writers-Group-Anthology-3-by-Carrie-Vaughn.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a07a05a00a08a04/What-to-Eat-During-Cancer-Treatment-100-Great-Tasting-Family-Friendly-Recipes-to-Help-You-Cope-by-Jeanne-Besser.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a07a05a01a05a00/The-Great-American-Eat-Right-Cookbook-140-Great-Tasting-Good-for-You-Recipes-by-Jeanne-Besser.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a05a07a05a07/Seven-Spoons-My-Favorite-Recipes-for-Any-and-Every-Day-by-Tara-O-39-Brady.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a08a04a09a07a05/JoAnn-and-Vickie-s-Favorite-Recipes-by-Gooseberry-Patch.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a06a00a00a07a07/Global-Home-Cooking-International-Families-Favorite-Recipes-by-Nancy-Freund.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a08a03a02a02/Toll-House-Heritage-Cookbook-A-Collection-Of-Favorite-Dessert-Recipes-by-Nestl-.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a01a01a05a00a02/Santa-Fe-Recipe-A-Cookbook-of-Recipes-from-Favorite-Local-Restaurants-by-Joan-Stromquist.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a00a08a08a01a05/Food-Lovers-Guide-to-Colorado-Best-Local-Specialties-Shops-Recipes-Restaurants-Events-Lore-and-More-by-Eliza-Cross-Castaneda.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a05a09a02a04a05/Forrest-Gump-My-Favorite-Chocolate-Recipes-Mama-s-Fudg-Cookies-Cakes-and-Candies-by-Leisure-Arts-Inc-.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a01a01a05a01a03/The-Hello-Kitty-Baking-Book-Recipes-for-Cookies-Cupcakes-and-More-by-Michele-Chen-Chock.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a04a05a04a01a06/Tasting-Never-Tasting-Never-1-by-C-M-Stunich.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a01a01a01a04a05/America-s-Bread-Book-300-Authentic-Recipes-for-America-s-Favorite-Homemade-Breads-Co-by-Mary-Gubser.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a04a07a07a09a05/In-the-Kitchen-with-Rosie-Oprah-s-Favorite-Recipes-by-Rosie-Daley.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a03a03a09a06a05/Dishing-Up-Vermont-145-Authentic-Recipes-from-the-Green-Mountain-State-by-Tracey-Medeiros.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a07a03a08a08a04/Saveur-Cooks-Authentic-Italian-Savoring-the-Recipes-and-Traditions-of-the-World-s-Favorite-Cuisine-by-Saveur-Magazine.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a07a08a05a01/Top-Secret-Restaurant-Recipes-Creating-Kitchen-Clones-from-America-s-Favorite-Restaurant-Chains-by-Todd-Wilbur.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a04a07a00a00/Segreto-Italiano-Secret-Italian-Recipes-amp-Favorite-Dishes-Italian-Cookbook-by-Daniel-Bellino-Zwicke.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a09a04a02a01a07/Lidia-s-Favorite-Recipes-100-Foolproof-Italian-Dishes-from-Basic-Sauces-to-Irresistible-Entrees-by-Lidia-Matticchio-Bastianich.pdfIn PDF document text