Malicious PDF — malware analysis report

Static analysis result for SHA-256 64070268aeb2616e…

MALICIOUS

PDF

28.3 KB Created: 2019-05-02 05:58:18 +01:00 Authoring application: mPDF 5.7
MD5: 5b37c8c48c9a3ee4dc215f931bbf5f3d SHA-1: 7ae2a5dfeb12162e527709aa453b0d15cd9dfc41 SHA-256: 64070268aeb2616ed1a67aca3f1ee5083149388b1810b926e02677e7fb7d659e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links pointing to external PDF files hosted on the domain 'cefasfese.4pu.com'. This activity is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or improve the ranking of malicious sites. The ML classifier also flagged this PDF as malicious, supporting the suspicious nature of the embedded 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://cefasfese.4pu.com/3738735739737736/The-Adventure-of-the-Reigate-Squire-The-Memoirs-of-Sherlock-Holmes-6-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/8736734731733730/Die-Memoiren-des-Sherlock-Holmes-Holmes-erstes-Abenteuer-und-andere-Detektivgeschichten-The-Memoirs-of-Sherlock-Holmes-The-Gloria-Scott-and-Other-Gesicht-und-vieles-mehr-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/8734738730737734/The-Complete-Sherlock-Holmes-Treasury-Including-The-Complete-Adventures-and-Memoirs-of-Sherlock-Holmes-The-Return-of-Sherlock-Holmes-The-Hound-of-the-Baskervilles-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/9734730737734731/The-Memoirs-of-Sherlock-Holmes-Las-Meorias-de-Sherlock-Holles-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/1730733733730739732/The-Memoirs-of-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/7736732737735739/The-Memoirs-of-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/3732732734739738/The-Memoirs-of-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/8732734731735733/The-Memoirs-of-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/8730730736735/The-Adventures-and-the-Memoirs-of-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/7735731731736734/The-Adventures-amp-Memoirs-of-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/9730739733735734/The-Memoirs-of-Sherlock-Holmes-Macmillan-Collector-s-Library-Book-28-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/4736737738736730/The-Adventure-of-the-Speckled-Band-and-Other-Stories-of-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/7739733734737/The-Adventure-of-Black-Peter-The-Return-of-Sherlock-Holmes-6-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/1730730737731737737/The-Adventures-of-Sherlock-Holmes-Die-Abenteuer-von-Sherlock-Holmes---zweisprachig-Englisch-Deutsch-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/1730735736739735730/A-Study-in-Scarlet-Introducing-Sherlock-Holmes-The-Sherlock-Holmes-Collection-Volume-1-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/2735733731731732/Sherlock-Holmes-Volume-1-A-Study-in-Scarlet-amp-Other-Sherlock-Holmes-Stories-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/7737733733730734/The-Adventures-of-Sherlock-Holmes-Sherlock-Holmes-The-Definitive-Collection-3-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/8736734731739739/Die-R-ckkehr-des-Sherlock-Holmes-Im-leeren-Hause-und-andere-Detektivgeschichten-The-Return-of-Sherlock-Holmes-The-Empty-House-and-Other-Stories---Zweisprachige-einsame-Radfahrerin-etc-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/2731735730739733/The-Case-Book-of-Sherlock-Holmes-Sherlock-Holmes-9-by-Arthur-Conan-Doyle.pdf
    • http://cefasfese.4pu.com/5735736731739732/The-Return-of-Sherlock-Holmes-Die-Wiederkehr-von-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdf

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