Malicious PDF — malware analysis report

Static analysis result for SHA-256 e51c32dbb3046a77…

MALICIOUS

PDF

24.8 KB Created: 2019-04-30 04:33:01 +01:00 Authoring application: mPDF 5.7
MD5: 0ec6363ad138958432d3bd262f7966e7 SHA-1: 32fdf22ea5e6f6d5eb811c5fc5d738d284ba5cef SHA-256: e51c32dbb3046a779db26bb3d10c914ff4f80640354fd8888347a0dbf6d0eb67
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a link farm or redirection scheme. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file. While no scripts were extracted, the sheer volume of links points to an attempt to manipulate search engine results or redirect users to potentially malicious content hosted on the `muicuiu.dumb1.com` domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

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/1a01a07a07a01a00a03/Four-Major-Works-by-Jane-Austen-Northanger-Abbey-Lady-Susan-Sense-and-Sensibility-Pride-and-Prejudice-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/5a09a03a03a08a02/Sense-and-Sensibility-By-Jane-Austen-Illustrated-amp-Unabridged-Free-Bonus-Audiobook-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/1a01a07a06a09a03a01/The-Complete-Works-of-Jane-Austen-In-One-Volume-Sense-and-Sensibility-Pride-and-Prejudice-Mansfield-Park-Emma-Northanger-Abbey-Persuasion-Lady-Sandition-and-the-Complete-Juvenilia-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/4a05a02a08a05a09/Sense-amp-Sensibility-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/6a04a05a01a01a06/Sense-amp-Sensibility-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/5a06a01a07a00a03/Sense-and-Sensibility-Illustrated-and-Annotated-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/1a01a07a06a09a02a09/Pride-and-prejudice-Sense-and-sensibility-Northanger-abbey-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/9a07a09a07a02a05/----Sense-and-Sensibility-Russian-edition-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/5a04a02a08a09a04/Sense-and-Sensibility-Audiobook-With-5-Great-Similar-Novels-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/1a01a05a02a03a07a03/Sex-amp-Sensibility-The-Adventures-of-a-Jane-Austen-Addict-by-Rosemarie-Santini.pdf
    • http://muicuiu.dumb1.com/3a09a09a04a04a04/Sense-and-Sensuality-Erotic-Fantasies-in-the-World-of-Jane-Austen-by-J-Blackmore.pdf
    • http://muicuiu.dumb1.com/9a08a00a07a07/Oakshot-Complete-Works-of-Jane-Austen-Illustrated-Inline-Footnotes-Classics-Book-7-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/8a06a03a00a04a04/Die-Jane-Austen-Collection-Gesamtausgabe-Stolz-und-Vorurteil-Verstand-und-Gef-hl-Emma-berredung-Mansfield-Park-Die-Abtei-von-Northanger-IDP-Classics-German-Edition-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/5a02a09a03a04a05/Jane-Austen---Emma-Vollst-ndige-deutsche-Ausgabe-IDP-Classics-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/1a01a07a06a09a02a08/Jane-Austen-Pride-and-Prejudice---Northanger-Abbey---Persuasion-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/5a09a03a04a08a02/Mansfield-Park-By-Jane-Austen---Illustrated-Comes-with-a-Free-Audiobook-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/1a00a08a06a05a00a02/Jane-Austen-Doppelband-Stolz-und-Vorurteil-Emma-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/5a05a08a04a06a05/The-Novels-of-Jane-Austen-Northanger-Abbey-In-Ten-Volumes-Vol-IX-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/5a02a04a07a08a03/Jane-Austen---Le-Parc-de-Mansfield-ou-les-Trois-cousines---4-Tomes---annot-Titre-original-Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/3a04a01a04a02a03/Sense-and-Sensibility-A-Latter-Day-Tale-by-Rebecca-H-Jamison.pdf
    • http://muicuiu.dumb1.com/1a01a07a06a09a03a01/The-Complete-Works-of-Jane-Austen-In-One-Volume-Sense-and-Sensibility-Pride-and-Prejudice-Mansfield-Park-Emma-Northanger-Abbey-Persuasion-Lady-Sandition-and-the-Complete-Juvenilia-by-Jane

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