Malicious PDF — malware analysis report

Static analysis result for SHA-256 88c7f8242287cdf8…

MALICIOUS

PDF

19.9 KB Created: 2019-05-03 05:12:38 +01:00 Authoring application: mPDF 5.7
MD5: a36b751713ab36dc87800c43c3f8d82e SHA-1: 414e4bfafb3bc70a5a59474ee9fe0b32b28ba318 SHA-256: 88c7f8242287cdf846a2225fda6bc82ea98390aaf6ff1a395fe6030afc1f21ae
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are marked as benign, the sheer volume and structure suggest an attempt to manipulate search engine results or redirect users to potentially malicious content hosted on these domains. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/8734736732735732/Watching-Us-Watching-Her-2-by-Scarlett-Metal.pdf
    • http://cefasfese.4pu.com/1730736738731732733/Tom-Jones-by-Henry-Fielding-Illustrated-FREE-Gulliver-s-Travels-by-Henry-Fielding.pdf
    • http://cefasfese.4pu.com/2737734737730739/Ruth-Fielding-On-Cliff-Island-Ruth-Fielding-6-by-Alice-B-Emerson.pdf
    • http://cefasfese.4pu.com/2737732734735737/Ruth-Fielding-at-Briarwood-Hall-Ruth-Fielding-2-by-Alice-B-Emerson.pdf
    • http://cefasfese.4pu.com/2737737733735730/Ruth-Fielding-in-the-Great-Northwest-Ruth-Fielding-17-by-Alice-B-Emerson.pdf
    • http://cefasfese.4pu.com/3736737735735737/Doctrines-of-Salvation-Complete-Three-Volume-Work-3-in-1-Sermons-amp-Writings-of-Joseph-Fielding-Smith-by-Joseph-Fielding-Smith.pdf
    • http://cefasfese.4pu.com/2737736733739734/Ruth-Fielding-at-College-Ruth-Fielding-11-by-Alice-B-Emerson.pdf
    • http://cefasfese.4pu.com/5734730730736737/Fly-High-With-Birds-The-Best-Book-Guide-On-Bird-Watching-Including-All-The-Things-You-Need-To-Know-About-Birding-Including-Bird-Watching-Scopes-The-Different-Birds-Bird-Feeders-and-Backyard-Birding-Why-Watch-Birds-And-Where-To-Find-Them-For-A-Rewardin-by-Mains.pdf
    • http://cefasfese.4pu.com/3736738732739736/Wives-Cheating-Husbands-Watching-Wives-Cheating-Husbands-Watching-1-by-Gustav-Jorgenson.pdf
    • http://cefasfese.4pu.com/3731737730736738/Wives-Cheating-Husbands-Watching-Vol-2-Wives-Cheating-Husbands-Watching-2-by-Gustav-Jorgenson.pdf
    • http://cefasfese.4pu.com/1731736732737735/Like-Nobody-s-Watching-by-L-J-Ritchie.pdf
    • http://cefasfese.4pu.com/2737731733734736/Watching-Over-You-by-Mel-Sherratt.pdf
    • http://cefasfese.4pu.com/9733735735736/Watching-Swifts-by-R-J-Askew.pdf
    • http://cefasfese.4pu.com/1731734734730737/I-ll-Be-Watching-by-Pamela-Porter.pdf
    • http://cefasfese.4pu.com/2735732730738/When-No-One-Is-Watching-by-Natalie-Charles.pdf
    • http://cefasfese.4pu.com/2730739738730732/Someone-Was-Watching-by-David-Patneaude.pdf
    • http://cefasfese.4pu.com/1735735736737734/Watching-You-by-Lance-Erlick.pdf
    • http://cefasfese.4pu.com/1731737731733730732/Watching-You-by-Gemma-Halliday.pdf
    • http://cefasfese.4pu.com/1735734730739735/The-Watching-Eye-Pimpernelles-3-by-Patricia-Elliott.pdf
    • http://cefasfese.4pu.com/1730738738734735739/Watching-the-Watcher-by-Gaye-Hi-y-lmaz.pdf

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