Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2dedadaeea4b2e…

MALICIOUS

PDF

26.4 KB Created: 2019-05-02 05:55:23 +01:00 Authoring application: mPDF 5.7
MD5: 1a00d7a6333d41b83621e76bbf2d3265 SHA-1: b8a8362647955e4e82f685ad127d3cdc2c5ae5f8 SHA-256: 1b2dedadaeea4b2eb5432f285248dbd00534d6fb8750dd841ad17489ec4fa4cf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded external links, characteristic of a link farm designed to redirect users to potentially harmful content. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the payload. The primary attack vector appears to be social engineering through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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/1a04a03a03a07a06/Jane-and-the-Ghosts-of-Netley-Jane-Austen-Mysteries-7-by-Stephanie-Barron.pdf
    • http://muicuiu.dumb1.com/4a09a00a09a09a06/Jane-and-the-Ghosts-of-Netley-Jane-Austen-Mysteries-7-by-Stephanie-Barron.pdf
    • http://muicuiu.dumb1.com/2a06a04a04a06a07/Jane-and-the-Twelve-Days-of-Christmas-Jane-Austen-Mysteries-12-by-Stephanie-Barron.pdf
    • http://muicuiu.dumb1.com/1a04a01a02a06a09/Jane-and-the-Prisoner-of-Wool-House-Jane-Austen-Mysteries-6-by-Stephanie-Barron.pdf
    • http://muicuiu.dumb1.com/1a05a07a09a07a06/Jane-and-the-Twelve-Days-of-Christmas-Jane-Austen-Mysteries-12-by-Stephanie-Barron.pdf
    • http://muicuiu.dumb1.com/1a04a01a04a00a06/Jane-and-the-Stillroom-Maid-Jane-Austen-Mysteries-5-by-Stephanie-Barron.pdf
    • 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/9a08a00a07a07/Oakshot-Complete-Works-of-Jane-Austen-Illustrated-Inline-Footnotes-Classics-Book-7-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/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/5a09a03a04a08a02/Mansfield-Park-By-Jane-Austen---Illustrated-Comes-with-a-Free-Audiobook-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/5a05a08a04a06a05/The-Novels-of-Jane-Austen-Northanger-Abbey-In-Ten-Volumes-Vol-IX-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/1a00a08a06a05a00a02/Jane-Austen-Doppelband-Stolz-und-Vorurteil-Emma-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/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/6a02a09a08a02a04/The-Juvenilia-of-Jane-Austen-and-Charlotte-Bront-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/2a03a07a08a00a07/What-Killed-Jane-Austen-And-Other-Medical-Mysteries-by-George-Biro.pdf
    • http://muicuiu.dumb1.com/1a06a05a02a03a00/Rude-Awakenings-of-a-Jane-Austen-Addict-Jane-Austen-Addict-2-by-Laurie-Viera-Rigler.pdf
    • http://muicuiu.dumb1.com/9a08a00a07a07/Oakshot-Complete-Works-of-Jane-Austen-Illustrated-Inline-Footnotes-Classics-Book-7-by-

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