Malicious PDF — malware analysis report

Static analysis result for SHA-256 733e165c41cca196…

MALICIOUS

PDF

18.2 KB Created: 2019-05-07 03:27:18 +01:00 Authoring application: mPDF 5.7
MD5: 14cecd6607a76bdd3a71b32201ba335b SHA-1: 8f580d308fa7af46734b81f915d15c89733c9bee SHA-256: 733e165c41cca196b33e75ae5e041d817a5fdda6bd0c5398346ce09b0c30d90a
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a "PDF_SEO_LINK_FARM" heuristic. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/2a00a05a00a06a05/How-to-Save-Your-Tail-by-Mary-Hanson.pdf
    • http://muicuiu.dumb1.com/8a01a01a01a01a02/How-to-Save-Your-Tail-if-you-are-a-rat-nabbed-by-cats-who-really-like-stories-about-magic-spoons-wol-ves-with-snout-warts-big-hairy-chimney-trolls-and-cookies-too-by-Mary-Hanson.pdf
    • http://muicuiu.dumb1.com/3a05a06a04a08a09/Spy-Secrets-That-Can-Save-Your-Life-A-Former-CIA-Officer-Reveals-Safety-and-Survival-Techniques-to-Keep-You-and-Your-Family-Protected-by-Jason-Hanson.pdf
    • http://muicuiu.dumb1.com/2a08a08a03a00a02/Catching-an-Evil-Tail-The-Soul-Catcher-2-by-Mary-Abshire.pdf
    • http://muicuiu.dumb1.com/1a09a04a07a02a07/Save-the-Date-by-Mary-Kay-Andrews.pdf
    • http://muicuiu.dumb1.com/2a02a09a04a07a06/To-Save-the-Wild-Bison-Life-on-the-Edge-in-Yellowstone-by-Mary-Ann-Franke.pdf
    • http://muicuiu.dumb1.com/1a01a01a09a05a03a09/Fairy-Tail-Vol-41-Fairy-Tail-41-by-Hiro-Mashima.pdf
    • http://muicuiu.dumb1.com/4a00a09a06a06a03/Fairy-Tail-Vol-06-Fairy-Tail-6-by-Hiro-Mashima.pdf
    • http://muicuiu.dumb1.com/3a04a08a07a00a05/Fairy-Tail-Vol-50-Fairy-Tail-50-by-Hiro-Mashima.pdf
    • http://muicuiu.dumb1.com/4a00a08a06a06a00/Fairy-Tail-Vol-05-Fairy-Tail-5-by-Hiro-Mashima.pdf
    • http://muicuiu.dumb1.com/4a02a08a08a02a02/Urgent-Message-From-Mother-Gather-the-Women-and-Save-the-World-Gather-the-Women-Save-the-World-by-Jean-Shinoda-Bolen.pdf
    • http://muicuiu.dumb1.com/1a01a07a05a08a06a00/The-Wonder-by-Faye-Hanson.pdf
    • http://muicuiu.dumb1.com/1a00a02a01a05a02a05/Mary-Mary-Not-So-Ordinary-The-Adventures-of-Miss-Mary-Bennet-1-by-S-M-Klassen.pdf
    • http://muicuiu.dumb1.com/1a00a02a01a05a04a06/Mary-Mary-Oh-So-Contrary-The-Adventures-of-Miss-Mary-Bennet-2-by-S-M-Klassen.pdf
    • http://muicuiu.dumb1.com/1a00a01a08a08a04a04/My-Mommy-s-Tote-by-P-H-Hanson.pdf
    • http://muicuiu.dumb1.com/3a03a05a07a03a02/The-Driver-by-Hart-Hanson.pdf
    • http://muicuiu.dumb1.com/1a00a09a01a01a09/The-Gideon-Protocol-by-L-C-Hanson.pdf
    • http://muicuiu.dumb1.com/6a08a04a05a06a00/Never-Noelle-by-Pam-Andrews-Hanson.pdf
    • http://muicuiu.dumb1.com/2a00a07a09a05/Ransom-s-Bride-by-Ginger-Hanson.pdf
    • http://muicuiu.dumb1.com/2a09a05a07a08a03/Faithful-Danger-by-Tanya-Hanson.pdf

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