Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e92304e55dfbf87…

MALICIOUS

PDF

15.2 KB Created: 2019-04-30 05:26:16 +01:00 Authoring application: mPDF 5.7
MD5: 348562dddda946028b4a975b50425910 SHA-1: aa9bd993ffc25c72f224d31f9f6e1e63250443aa SHA-256: 6e92304e55dfbf87691b0d0a232a5cb2e31869325ce57656ee55bf8899c20d09
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, which is a common technique for distributing malicious content or leading users to phishing sites. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the presence of numerous external links suggests an attempt to trick users into downloading potentially harmful files, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/4a01a09a01a05a02/All-You-Need-Is-Kill-Vol-1-All-You-Need-Is-Kill-1-by-Ryosuke-Takeuchi.pdf
    • http://muicuiu.dumb1.com/1a01a06a00a08a08a03/All-You-Need-Is-Kill-2-by-Ryosuke-Takeuchi.pdf
    • http://muicuiu.dumb1.com/4a02a06a06a05a06/Kill-La-Kill-Volume-1-by-Trigger.pdf
    • http://muicuiu.dumb1.com/2a06a07a01a02a06/Kill-Devil-Hills-Kill-Devil-Hills-1-by-Sarah-Darlington.pdf
    • http://muicuiu.dumb1.com/8a05a08a07a02a01/Kill-or-be-Killed-Vol-2-Kill-or-be-Killed-2-by-Ed-Brubaker.pdf
    • http://muicuiu.dumb1.com/4a01a00a04a00a03/-quot-Guns-Don-t-Kill-People-People-Kill-People-quot-And-Other-Myths-About-Guns-and-Gun-Control-by-Dennis-A-Henigan.pdf
    • http://muicuiu.dumb1.com/2a01a05a05a09a06/How-To-Kill-Yourself-by-C-V-Hunt.pdf
    • http://muicuiu.dumb1.com/2a08a06a03a03a06/Kill-the-Lights-Kill-the-Lights-1-2-by-.pdf
    • http://muicuiu.dumb1.com/1a08a03a07a05a05/First-Kill-by-Darcia-Helle.pdf
    • http://muicuiu.dumb1.com/2a06a07a03a07a03/I-d-Kill-For-That-by-Gayle-Lynds.pdf
    • http://muicuiu.dumb1.com/4a05a01a03a04a00/She-Can-Kill-She-Can-5-by-Melinda-Leigh.pdf
    • http://muicuiu.dumb1.com/7a00a08a02a05/To-Kill-a-Mockingbird-by-Harper-Lee.pdf
    • http://muicuiu.dumb1.com/7a03a06a03a09a09/How-to-Kill-a-Man-by-Kristin-DeVille.pdf
    • http://muicuiu.dumb1.com/5a03a02a02a00/To-Kill-a-Mockingbird-by-Harper-Lee.pdf
    • http://muicuiu.dumb1.com/3a09a04a01a00a04/Kill-The-Cynic-by-Ina-Disguise.pdf
    • http://muicuiu.dumb1.com/3a07a07a04a08a08/Kill-Her-Not-by-Nell-Boye.pdf
    • http://muicuiu.dumb1.com/3a09a05a09a03/To-Kill-a-Mockingbird-by-Harper-Lee.pdf
    • http://muicuiu.dumb1.com/2a05a00a09a06a03/To-Kill-a-Mockingbird-by-Harper-Lee.pdf
    • http://muicuiu.dumb1.com/3a04a02a08a06a05/To-Kill-the-President-by-Sam-Bourne.pdf
    • http://muicuiu.dumb1.com/5a02a06a00a05a03/Kill-Fee-by-Barbara-Paul.pdf

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