Malicious PDF — malware analysis report

Static analysis result for SHA-256 d388388bbe2ce8a1…

MALICIOUS

PDF

15.9 KB Created: 2019-05-02 01:03:01 +01:00 Authoring application: mPDF 5.7
MD5: 968fa81a4940a20a26ccfea991338a4f SHA-1: e6d2e42fc37a88fc984c576c4904979498b28e2a SHA-256: d388388bbe2ce8a137d2202c9171193e963d4880e1787da45877dba417f566cf
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While most of these links point to benign book titles, the sheer volume and structure suggest a malicious intent, possibly for SEO poisoning or to mask malicious redirects. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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/6a08a08a07a07a09/Shadow-of-Danger-CORE-Shadow-Trilogy-1-by-Kristine-Mason.pdf
    • http://muicuiu.dumb1.com/4a09a02a07a03a05/The-Shadow-Walkers-Ghost-Series-Books-1-3-Lost-in-Shadow-Desired-by-Shadow-Iced-in-Shadow-by-Cynthia-Luhrs.pdf
    • http://muicuiu.dumb1.com/4a05a00a02a07a06/Shadow-Walker-Flame-Set-2-by-Connie-Mason.pdf
    • http://muicuiu.dumb1.com/3a04a05a08a02a09/Shadow-of-the-Hegemon-Ender-s-Shadow-2-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/3a02a06a05a06/Ender-s-Shadow-The-Shadow-Series-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/3a04a02a03a06a03/Shadow-of-the-Giant-The-Shadow-Series-4-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/2a00a07a08a04a09/Shadow-Love-Stalkers-Shadow-Vampires-1-by-Claudy-Conn.pdf
    • http://muicuiu.dumb1.com/4a04a03a00a03a05/Ender-s-Shadow-Shadow-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/4a02a04a06a07a02/Ender-s-Shadow-Shadow-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/4a08a01a01a06a02/Shadow-Touched-Shadow-Touch-1-4-by-Erin-Kellison.pdf
    • http://muicuiu.dumb1.com/9a00a05a06a01/Shadow-s-Fall-Shadow-World-3-by-Dianne-Sylvan.pdf
    • http://muicuiu.dumb1.com/5a04a05a07a07a02/Ender-s-Shadow-Shadow-1-by-Orson-Scott-Card.pdf
    • http://muicuiu.dumb1.com/1a04a08a06a04a06/The-Shadow-Throne-The-Shadow-Campaigns-2-by-Django-Wexler.pdf
    • http://muicuiu.dumb1.com/4a04a08a05a02a02/The-Shadow-Gypsy-Shadow-Sister-2-by-C-R-Daems.pdf
    • http://muicuiu.dumb1.com/2a07a08a09a05a07/The-Shadow-In-the-Shadow-of-the-Dragon-1-by-Francis-Laveaux.pdf
    • http://muicuiu.dumb1.com/3a04a06a09/Shadow-Rider-Shadow-1-by-Christine-Feehan.pdf
    • http://muicuiu.dumb1.com/3a00a08a06a03a03/Shadow-Slayer-Shadow-2-by-Laura-A-H-Elliott.pdf
    • http://muicuiu.dumb1.com/1a01a00a00a01a06/Of-Shadow-and-Sea-Elder-Empire-Shadow-1-by-Will-Wight.pdf
    • http://muicuiu.dumb1.com/3a06a07a05a08a02/Glimmer-in-the-Shadow-Cavalier-Trilogy-3-by-Jason-L-McWhirter.pdf
    • http://muicuiu.dumb1.com/9a06a01a03/Shadow-of-Night-All-Souls-Trilogy-2-by-Deborah-Harkness.pdf
    • http://muicuiu.dumb1.com/4a08a01a01a06a02/Shadow-Touched-Shadow-Touch-1-4-by-Erin-Kel

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