Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ffa4ee45cd0049…

MALICIOUS

PDF

17.6 KB Created: 2019-04-30 03:55:48 +01:00 Authoring application: mPDF 5.7
MD5: db4fc15102078402ef8542fffc71ecc8 SHA-1: b13c0aaa5b3037c94464b9bc0bebed3c33172b00 SHA-256: a0ffa4ee45cd0049f6d02e586ca49c0b42fdc0adc67c41e3b55f3d914e3fcf07
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While the specific intent of the linked PDFs is unclear, the sheer volume and the suspicious domain suggest a malicious distribution campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9788

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/4a09a03a02a02a06/Bullet-Points-by-Mark-Watson.pdf
    • http://muicuiu.dumb1.com/1a00a03a05a06a03a03/Im-Restaurant-und-anderswo-Hotel-Alpha-Stories-by-Mark-Watson.pdf
    • http://muicuiu.dumb1.com/4a04a03a01a08a02/The-Eleven-Hour-Fall-The-Eleven-Hour-Fall-1-by-Robert-Appleton.pdf
    • http://muicuiu.dumb1.com/1a00a02a04a05a09a08/Articles-on-Cultural-Critics-Including-Pierre-Schaeffer-Slavoj-I-Ek-Mark-Steyn-Ziauddin-Sardar-Jamal-Watson-Carolyn-Cooper-Ashis-Nandy-E-San-Juan-Jr-Gautam-Bhatia-Diedrich-Diederichsen-by-Hephaestus-Books.pdf
    • http://muicuiu.dumb1.com/1a01a00a06a04a01/Mercy-Watson-Something-Wonky-This-Way-Comes-Mercy-Watson-6-by-Kate-DiCamillo.pdf
    • http://muicuiu.dumb1.com/2a02a05a05a09a03/Mercy-Watson-Goes-for-a-Ride-Mercy-Watson-2-by-Kate-DiCamillo.pdf
    • http://muicuiu.dumb1.com/1a09a02a09a03a06/Nine-Eleven-Ten-by-Subtilior.pdf
    • http://muicuiu.dumb1.com/1a00a02a04a03a09/Eleven-Stories-by-Leo-Tolstoy.pdf
    • http://muicuiu.dumb1.com/3a04a09a06a03a02/Eleven-Days-by-Donald-Harstad.pdf
    • http://muicuiu.dumb1.com/4a09a09a01a00a00/Eleven-Kids-One-Summer-by-Ann-M-Martin.pdf
    • http://muicuiu.dumb1.com/1a00a07a06a06a08/Eleven-Shadow-and-Light-1-by-J-J-Bende.pdf
    • http://muicuiu.dumb1.com/1a01a09a09a07a00/The-Eleven-The-Gathering-by-Dewayne-Pyatt.pdf
    • http://muicuiu.dumb1.com/7a09a06a08a02a07/Eleven-Stories-and-More-by-Kathrine-Kressmann-Taylor.pdf
    • http://muicuiu.dumb1.com/3a04a08a06a09/Eleven-on-Top-Stephanie-Plum-11-by-Janet-Evanovich.pdf
    • http://muicuiu.dumb1.com/4a03a00a04a04a04/Eleven-Minutes-Fracture-0-5-by-Megan-Miranda.pdf
    • http://muicuiu.dumb1.com/1a00a03a08a01a03a02/Council-of-Eleven-Shall-We-Not-Revenge-by-Jeff-Minde.pdf
    • http://muicuiu.dumb1.com/1a01a01a08a02a05/Eleven-Brandon-Fisher-FBI-1-by-Carolyn-Arnold.pdf
    • http://muicuiu.dumb1.com/3a01a06a09a06a01/The-Listerdale-Mystery-And-Eleven-Other-Stories-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/2a07a08a02a04a01/On-Looking-Eleven-Walks-with-Expert-Eyes-by-Alexandra-Horowitz.pdf
    • http://muicuiu.dumb1.com/7a01a05a04a00a03/Eleven-Brandon-Fisher-FBI-series-1-by-Carolyn-Arnold.pdf
    • http://muicuiu.dumb1.com/3a0

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