Malicious PDF — malware analysis report

Static analysis result for SHA-256 67d41079a2b36461…

MALICIOUS

PDF

14.5 KB Created: 2019-04-30 05:31:54 +01:00 Authoring application: mPDF 5.7
MD5: 39c60a4e05b24551354055c31d30b0c2 SHA-1: 2ff8dbb813350329d6de493d10acd193a3f26c3b SHA-256: 67d41079a2b364616fe627c0c9558d4f33b18f19459ae376b0337122688958e3
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to other PDF files, disguised as fairy tales or literary retellings. This heuristic firing, PDF_SEO_LINK_FARM, indicates a link farm designed to attract traffic or potentially distribute further malicious content. While no scripts were explicitly extracted, the structure and embedded URLs suggest a lure to download additional content, likely for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/3a08a09a08a08a01/Charming-A-fairy-tale-retelling-of-Mansfield-Park-by-Nina-Clare.pdf
    • http://muicuiu.dumb1.com/2a00a09a05a09a08/Beck-A-Fairy-Tale-by-Nina-Clare.pdf
    • http://muicuiu.dumb1.com/2a03a02a07a00a07/Servant-of-the-Forest-A-fairy-tale-retelling-by-Shona-Husk.pdf
    • http://muicuiu.dumb1.com/1a00a08a04a02a07/The-Most-Wonderful-Fairy-Tale-Fairy-Tale-Chronicles-1-by-Nicholas-Jobe.pdf
    • http://muicuiu.dumb1.com/5a02a04a07a08a03/Jane-Austen---Le-Parc-de-Mansfield-ou-les-Trois-cousines---4-Tomes---annot-Titre-original-Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/4a04a03a04a09a04/Swimming-Alone-by-Nina-Mansfield.pdf
    • http://muicuiu.dumb1.com/5a06a09a05a02a00/Not-Quite-the-Fairy-Tale-Volume-1-Not-Quite-the-Fairy-Tale-1-4-by-May-Sage.pdf
    • http://muicuiu.dumb1.com/9a09a08a04a04a07/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/7a02a03a00a09a07/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/4a06a03a01a03a00/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/3a02a03a09a08/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/2a06a09a09a01a08/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/7a09a06a01a09a00/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/9a00a01a04a04/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/8a07a07a06a06a09/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/1a00a03a07a07a07a05/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/8a08a09a00a08a08/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/3a08a09a00a09a07/Mansfield-Park-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/6a02a09a08a02a03/Mansfield-Park-Audiobook-by-Jane-Austen.pdf
    • http://muicuiu.dumb1.com/3a06a02a00a00a06/Americana-Fairy-Tale-Fairy-Tales-of-the-Open-Road-1-by-Lex-Chase.pdf

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