Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0cd6fecfb49fc48…

MALICIOUS

PDF

16.5 KB Created: 2019-05-03 06:00:08 +01:00 Authoring application: mPDF 5.7
MD5: 25ce5cb0dcc8ba481eb091bb8064292f SHA-1: d7b49c40bae5a04a202acda1caa9bb09c03c26fc SHA-256: a0cd6fecfb49fc48359572c9fe1e138e5fc7aefadd051b32c42494e0bc94d886
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, suggesting a link farm or content aggregation strategy. While the document body is heavily obfuscated, the heuristic 'PDF_SEO_LINK_FARM' indicates the primary malicious function is to direct users to these external resources. No scripts were extracted, and the nature of the linked content is unclear, but the sheer volume of links points to a deliberate attempt to manipulate search engine results or drive traffic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/4a02a08a05a05/A-Visible-Darkness-Max-Freeman-2-by-Jonathon-King.pdf
    • http://muicuiu.dumb1.com/3a06a06a09a09a01/Visible-Through-Darkness-The-Jura-Series-1-by-Auden-Johnson.pdf
    • http://muicuiu.dumb1.com/1a00a01a09a00a07a05/Darkness-Visible-The-Book-of-Lilith-by-Priscilla-McGreer.pdf
    • http://muicuiu.dumb1.com/4a07a01a03a09a01/Shadow-Star-2---Darkness-Visible-by-Mohiro-Kitoh.pdf
    • http://muicuiu.dumb1.com/6a04a05a05a01a06/Felures-Dans-le-Visible-Rifts-in-the-Visible-by-Inge-Israel.pdf
    • http://muicuiu.dumb1.com/4a03a07a06a01a08/A-La-Cour-De-Mobutu-by-Pierre-Janssen.pdf
    • http://muicuiu.dumb1.com/2a09a07a09a03a09/Dibdin-in-Paris-by-Frans-A-Janssen.pdf
    • http://muicuiu.dumb1.com/9a01a05a01a06a07/The-Secret-of-Otherland-by-Mieke-Janssen-Matthes.pdf
    • http://muicuiu.dumb1.com/9a08a08a02a04a00/SPIEGEL-E-Book-M-nchhausen-by-Hauke-Janssen.pdf
    • http://muicuiu.dumb1.com/1a01a09a02a07a08a03/Espresso-Quick-Reference-Guide-by-Phillip-Janssen.pdf
    • http://muicuiu.dumb1.com/3a00a07a04a05a00/Little-Visible-Delight-by-S-P-Miskowski.pdf
    • http://muicuiu.dumb1.com/1a01a05a08a08a06/The-Visible-Man-by-Chuck-Klosterman.pdf
    • http://muicuiu.dumb1.com/5a08a05a07a08a06/Hommage-a-Tannewetzel-Neujahrsrede-in-St-Marien-zu-Lubeck-by-Horst-Janssen.pdf
    • http://muicuiu.dumb1.com/1a01a04a03a05a04a05/Hinkepott-Autobiographische-Hupferei-in-Briefen-Und-Aufsatzen-by-Horst-Janssen.pdf
    • http://muicuiu.dumb1.com/1a00a04a09a04a01a02/The-World-Almanac-and-Book-of-Facts-2013-by-Sarah-Janssen.pdf
    • http://muicuiu.dumb1.com/4a07a00a03a08a02/Sexism-The-Male-Monopoly-on-History-and-Thought-by-Marielouise-Janssen-Jurreit.pdf
    • http://muicuiu.dumb1.com/5a02a01a07a00a04/The-Visible-and-the-Invisible-by-Maurice-Merleau-Ponty.pdf
    • http://muicuiu.dumb1.com/4a09a01a07a01a04/The-Sky-Isn-t-Visible-from-Here-Scenes-from-a-Life-by-Felicia-C-Sullivan.pdf
    • http://muicuiu.dumb1.com/1a01a03a07a06a03a08/Paul-Klee-Making-Visible-by-Matthew-Gale.pdf
    • http://muicuiu.dumb1.com/9a08a00a09a06a07/Wir-Sind-Zum-Wechselseitigen-Gesprach-Geboren-Philipp-Melanchthon-Und-Die-Reichsreligionsgesprache-Von-1540-41-by-Wibke-Janssen.pdf

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