Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05fa4fd70a79d56…

MALICIOUS

PDF

21.6 KB Created: 2019-04-30 04:12:21 +01:00 Authoring application: mPDF 5.7
MD5: 1b918cc9d79b6fefc4db9602392a619f SHA-1: ef3f1067b5dd4da2beb28df3024c480c21f9a94e SHA-256: c05fa4fd70a79d5665dfa63384e1472f37dbcc71c20f09201f3aa83155241400
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. While many of these links point to benign content, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious sites. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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://muicuiu.dumb1.com/3a00a07a08a05a01/Top-Secret-Restaurant-Recipes-Creating-Kitchen-Clones-from-America-s-Favorite-Restaurant-Chains-by-Todd-Wilbur.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a06a05a01/Top-Secret-Restaurant-Recipes-2-More-Amazing-Clones-of-Famous-Dishes-from-America-s-Favorite-Restaurant-Chains-by-Todd-Wilbur.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a07a04a08/Top-Secret-Restaurant-Recipes-3-The-Secret-Formulas-for-Duplicating-Your-Favorite-Restaurant-Dishes-at-Home-by-Todd-Wilbur.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a07a08a07/Craft-of-Cooking-Notes-and-Recipes-from-a-Restaurant-Kitchen-by-Tom-Colicchio.pdf
    • http://muicuiu.dumb1.com/3a00a08a06a02a06/White-Dog-Cafe-Cookbook-Multicultural-Recipes-and-Tales-of-Adventure-from-Philadelphia-s-Revolutionary-Restaurant-by-Judy-Wicks.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a06a05a03/New-Recipes-from-Moosewood-Restaurant-by-The-Moosewood-Collective.pdf
    • http://muicuiu.dumb1.com/3a01a01a01a04a05/America-s-Bread-Book-300-Authentic-Recipes-for-America-s-Favorite-Homemade-Breads-Co-by-Mary-Gubser.pdf
    • http://muicuiu.dumb1.com/8a04a07a07a09a05/In-the-Kitchen-with-Rosie-Oprah-s-Favorite-Recipes-by-Rosie-Daley.pdf
    • http://muicuiu.dumb1.com/2a04a00a04a05a07/The-Restaurant-of-Love-Regained-by-Ito-Ogawa.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a06a04a08/The-Restaurant-The-Mill-by-Linn-B-Halton.pdf
    • http://muicuiu.dumb1.com/1a00a00a03a01/The-How-Can-It-Be-Gluten-Free-Cookbook-Revolutionary-Techniques-Groundbreaking-Recipes-by-America-39-s-Test-Kitchen.pdf
    • http://muicuiu.dumb1.com/2a08a03a09a03a03/Dinner-at-the-Homesick-Restaurant-by-Anne-Tyler.pdf
    • http://muicuiu.dumb1.com/3a05a03a05a05a03/Restaurant-Babylon-by-Imogen-Edwards-Jones.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a06a08a07/King-of-Gods-1-by-Convenience-Food-Restaurant.pdf
    • http://muicuiu.dumb1.com/8a08a09a07a06a07/Denver-Dines-A-Restaurant-Guide-And-More-by-John-Lehndorff.pdf
    • http://muicuiu.dumb1.com/4a06a04a03a06a02/The-Restaurant-at-the-End-of-the-Universe-Hitchhiker-s-Guide-2-by-Douglas-Adams.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a07a05a02/Restaurant-Financial-Management-Basics-by-Raymond-S-Schmidgall.pdf
    • http://muicuiu.dumb1.com/7a06a04a06a04a08/The-Native-Foods-Restaurant-Cookbook-by-Tanya-Petrovna.pdf
    • http://muicuiu.dumb1.com/6a01a01a07a05/The-Restaurant-at-the-End-of-the-Universe-Hitchhiker-s-Guide-2-by-Douglas-Adams.pdf
    • http://muicuiu.dumb1.com/4a08a00a03a06a01/The-Restaurant-at-the-End-of-the-Universe-Hitchhiker-s-Guide-2-by-Douglas-Adams.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a07a08a07/Craft-of-Cooking-Notes-and-Recipes-from-a-Restaurant-Kitchen-by-Tom-Col