Malicious PDF — malware analysis report

Static analysis result for SHA-256 63db54e331340f31…

MALICIOUS

PDF

13.5 KB Created: 2019-05-03 05:59:06 +01:00 Authoring application: mPDF 5.7
MD5: 157d0d9436f4b28ce2ad643e0ac8f763 SHA-1: e4e5a8a42374dc7595a28e342ee35c16c610549f SHA-256: 63db54e331340f3102dbefd7c5a93f115000077b41af23b1ec7dea3bfd44d06f
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, and a heuristic indicates the presence of a visual download button lure. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the structure suggests an attempt to trick users into navigating to external URLs, likely for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/3a08a02a07a09a04/Bite-at-First-Sight-Scandals-with-Bite-3-by-Brooklyn-Ann.pdf
    • http://muicuiu.dumb1.com/1a02a02a00a00a02/Bite-Me-Your-Grace-Scandals-with-Bite-1-by-Brooklyn-Ann.pdf
    • http://muicuiu.dumb1.com/3a08a07a03a09a02/Big-Bad-Bite-Returned-Big-Bad-Bite-2-5-by-Jessie-Lane.pdf
    • http://muicuiu.dumb1.com/2a09a05a03a07a05/Bite-Somebody-Else-Bite-Somebody-2-by-Sara-Dobie-Bauer.pdf
    • http://muicuiu.dumb1.com/1a06a00a05a07a05/Bite-Bite-1-by-Sean-Michael.pdf
    • http://muicuiu.dumb1.com/1a06a09a00a04a00/Bite-amp-Release-Bite-amp-Release-1-by-Cory-Cyr.pdf
    • http://muicuiu.dumb1.com/3a04a08a03a02a07/First-Bite-How-We-Learn-to-Eat-by-Bee-Wilson.pdf
    • http://muicuiu.dumb1.com/3a07a02a04a04a03/Second-Bite-by-Lauren-Stewart.pdf
    • http://muicuiu.dumb1.com/2a08a04a00a05a00/I-Want-To-Bite-by-Isaya-Takamori.pdf
    • http://muicuiu.dumb1.com/8a09a02a03a04a02/Jaguar-s-Bite-by-Sunny-Day.pdf
    • http://muicuiu.dumb1.com/2a06a00a09a04a07/Bite-Me-Vol-1-by-Tracey-H-Kitts.pdf
    • http://muicuiu.dumb1.com/3a08a01a01a04a00/The-Bite-Before-Christmas-by-Laura-Baumbach.pdf
    • http://muicuiu.dumb1.com/3a09a05a03a09a01/Bite-the-Bullet-Bitten-5-by-C-C-Wood.pdf
    • http://muicuiu.dumb1.com/5a03a07a01a04/Bite-With-Height-by-Lucy-Felthouse.pdf
    • http://muicuiu.dumb1.com/3a07a08a05a06a03/The-Power-Of-The-Bite-by-Lisa-Oliver.pdf
    • http://muicuiu.dumb1.com/2a01a06a05a07a02/Last-Bite-of-the-Cherry-by-Margaret-Cullingford.pdf
    • http://muicuiu.dumb1.com/3a03a08a01a03a06/I-Will-Bite-You-and-Other-Stories-by-Joseph-Lambert.pdf
    • http://muicuiu.dumb1.com/5a00a04a08a08a04/Snake-Bite-by-Andy-Lane.pdf
    • http://muicuiu.dumb1.com/8a04a06a05a05a06/Her-Bark-amp-Her-Bite-by-James-Albon.pdf
    • http://muicuiu.dumb1.com/1a03a04a03a09a04/One-More-Bite-Jaz-Parks-5-by-Jennifer-Rardin.pdf

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