Malicious PDF — malware analysis report

Static analysis result for SHA-256 b56ba802cd7c51e8…

MALICIOUS

PDF

15.3 KB Created: 2019-04-29 23:18:56 +01:00 Authoring application: mPDF 5.7
MD5: 27cc5ad610483e06b0cc6114969a29c9 SHA-1: 37372e1de1b1d7b2806e05301bf2264ecc330ae1 SHA-256: b56ba802cd7c51e8535738dae389921bbd1d4cd77c2537a80a0942ab0e090c15
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ML classifier strongly indicated maliciousness. While the specific intent of the linked PDFs is unclear, the sheer volume and the heuristic firing suggest a malicious distribution or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/7a01a02a01a01a07/White-Sugar-Brown-Sugar-by-E-G-Tripp.pdf
    • http://muicuiu.dumb1.com/6a05a06a03a05a04/Sugar-Sugar-Rune-Volume-8-Sugar-Sugar-Rune-8-by-Moyoco-Anno.pdf
    • http://muicuiu.dumb1.com/6a05a06a03a05a02/Sugar-Sugar-Rune-Volume-4-Sugar-Sugar-Rune-4-by-Moyoco-Anno.pdf
    • http://muicuiu.dumb1.com/3a08a07a02/Sugar-Rush-Sugar-Bowl-2-by-Sawyer-Bennett.pdf
    • http://muicuiu.dumb1.com/9a05a06a00a00a04/Low-Sugar-So-Simple-100-Delicious-Low-Sugar-Low-Carb-Gluten-Free-Recipes-for-Eating-Clean-and-Living-Healthy-by-Elviira-Krebber.pdf
    • http://muicuiu.dumb1.com/2a07a03a05a00a05/Sugar-Rush-Sugar-1-by-Julie-Burchill.pdf
    • http://muicuiu.dumb1.com/3a05a01a09a06a00/The-Sugar-House-by-Antonia-White.pdf
    • http://muicuiu.dumb1.com/2a07a07a01a03a04/Sugar-Princess-Skating-To-Win-Vol-1-Sugar-Princess-1-by-Hisaya-Nakajo.pdf
    • http://muicuiu.dumb1.com/2a03a04a01a09a00/Deadly-Sugar-Deadly-Sugar-1-by-Ofelia-Gr-nd.pdf
    • http://muicuiu.dumb1.com/6a04a05a05a03a01/The-Sugar-Babies-The-Sugar-Babies-1-by-O-M-Faye.pdf
    • http://muicuiu.dumb1.com/1a01a05a07a00/Sugar-Springs-Sugar-Springs-1-by-Kim-Law.pdf
    • http://muicuiu.dumb1.com/1a00a08a04a09a00a04/FROM-SUGAR-TO-SHIT-2-by-Mr-777.pdf
    • http://muicuiu.dumb1.com/5a00a03a05a00a03/Sugar-Topped-by-E-Davies.pdf
    • http://muicuiu.dumb1.com/4a07a00a06a07a04/Year-of-No-Sugar-by-Eve-O-Schaub.pdf
    • http://muicuiu.dumb1.com/3a01a07a00a01a05/The-Chameleon-by-Sugar-Rautbord.pdf
    • http://muicuiu.dumb1.com/4a06a06a08a08a08/Sugar-for-the-Horse-by-H-E-Bates.pdf
    • http://muicuiu.dumb1.com/3a02a01a07a05a00/The-Bad-Boy-CEO-Destiny-1-by-Sugar-Jamison.pdf
    • http://muicuiu.dumb1.com/9a02a07a04a00/Hannah-and-Sugar-by-Kate-Berube.pdf
    • http://muicuiu.dumb1.com/3a01a04a00a02a00/So-Right-Sugar-Baby-2-by-Rebekah-Weatherspoon.pdf
    • http://muicuiu.dumb1.com/1a08a08a01a08a00/Sugar-and-Slate-by-Charlotte-Williams.pdf
    • http://muicuiu.dumb1.com/2a03a04a01a09a00/Deadly-Sugar-Deadly-Sugar-1-by-Ofeli

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