Malicious PDF — malware analysis report

Static analysis result for SHA-256 1933a4409b9eb1ec…

MALICIOUS

PDF

18.6 KB Created: 2019-04-30 04:03:33 +01:00 Authoring application: mPDF 5.7
MD5: bac326540a98364df4e254cc1359fc01 SHA-1: 215dc9699b36f3d01ceef3444368a0b5f9b61261 SHA-256: 1933a4409b9eb1ece749380c21a957c8bf935bfb86a63182d6ca6d3b3749acc7
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs disguised as academic papers, forming a link farm. While no scripts were extracted, the heuristic 'PDF_SEO_LINK_FARM' indicates a malicious intent to redirect users to potentially harmful sites. The presence of a 'download button' lure further supports a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/5a09a06a00a03a02/Defending-a-New-Nation-1783-1811-Defending-a-New-Nation-1783-1811-by-John-R-Maass.pdf
    • http://muicuiu.dumb1.com/5a09a05a08a09a08/A-New-Nation-The-United-States-1783-1815-by-Betsy-Maestro.pdf
    • http://muicuiu.dumb1.com/5a09a05a09a08a02/Triumph-of-Freedom-1775-1783-by-John-Chester-Miller.pdf
    • http://muicuiu.dumb1.com/5a09a05a09a07a08/Bernardo-de-G-lvez-in-Louisiana-1776-1783-by-John-Walton-Caughey.pdf
    • http://muicuiu.dumb1.com/5a09a06a00a03a00/Historical-Atlas-Of-The-Early-Modern-World-1492---1783-by-John-Haywood.pdf
    • http://muicuiu.dumb1.com/8a02a09a01a04a06/Reliques-of-Ancient-English-Poetry-by-Thomas-1729-1811-Percy-Ed.pdf
    • http://muicuiu.dumb1.com/8a07a07a06a02/Franz-Liszt-The-Virtuoso-Years-1811-1847-by-Alan-Walker.pdf
    • http://muicuiu.dumb1.com/2a01a01a09a06a09/Emmy-Nation-Undercover-Suffragette-The-Suffragette-Nation-1-by-L-Davis-Munro.pdf
    • http://muicuiu.dumb1.com/9a07a08a00a06a08/Emmy-Nation-Undercover-Suffragette-The-Suffragette-Nation-1-by-L-Davis-Munro.pdf
    • http://muicuiu.dumb1.com/1a00a09a05a08a09a09/Deutsche-Drucker-Und-Buchhandler-in-London-1680-1811-Strukturen-Und-Bedeutung-Des-Deutschen-Anteils-Am-Englischen-Buchhandel-by-Graham-Jefcoate.pdf
    • http://muicuiu.dumb1.com/3a04a07a03a02a06/Defending-Parker-by-winx1348.pdf
    • http://muicuiu.dumb1.com/1a00a09a06a00a02a06/Deutsche-Drucker-Und-Buchh-ndler-in-London-1680-1811-Strukturen-Und-Bedeutung-Des-Deutschen-Anteils-Am-Englischen-Buchhandel-by-Graham-Jefcoate.pdf
    • http://muicuiu.dumb1.com/1a01a03a07a02a02a00/Defending-Pornography-by-Nadine-Strossen.pdf
    • http://muicuiu.dumb1.com/8a04a04a06a05/Defending-the-Undefendable-by-Walter-Block.pdf
    • http://muicuiu.dumb1.com/8a05a02a03a05a02/The-Register-of-Worcester-Cathedral-1693-1811-by-Worcestershire-Parish-Register-Society.pdf
    • http://muicuiu.dumb1.com/1a01a02a02a06a04a07/Firstborn-amp-Defending-Elysium-by-Brandon-Sanderson.pdf
    • http://muicuiu.dumb1.com/1a01a03a07a02a09a05/Heresy-A-History-of-Defending-the-Truth-by-Alister-E-McGrath.pdf
    • http://muicuiu.dumb1.com/4a05a00a09a04a02/Defending-Hearts-Boys-of-Fall-2-by-Shannon-Stacey.pdf
    • http://muicuiu.dumb1.com/6a01a05a02a04a05/Belief-and-the-Nation-by-John-Scriven.pdf
    • http://muicuiu.dumb1.com/5a07a05a06a01/Fuzzy-Nation-by-John-Scalzi.pdf