Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e1960944621580e…

MALICIOUS

PDF

28.2 KB Created: 2018-06-11 09:22:29 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2020-08-10
MD5: 45e9eb6ebaa382957282e501b9b046d1 SHA-1: c9845cffc72ef70341c177078edfcb3a8b7bbe83 SHA-256: 1e1960944621580e21151654b861a07718dc9e86269791ecce2d2a7bd5ae36f0
102 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9683

Heuristics 4

  • Fake 'free download' SEO-poisoning PDF critical PDF_SEO_FAKE_DOWNLOAD
    The ML classifier flagged this PDF AND it carries a visual download/call-to-action lure AND an off-domain server-side download-gateway link whose query string names a document payload. This three-signal conjunction is the fake-document / 'free PDF download' SEO-poisoning delivery pattern: the page is padded with benign decoy links to dilute classifier scores while funnelling the victim through the gateway to malware/scareware. Acting only on the conjunction keeps benign download-bearing PDFs from being misflagged.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://uncpbisdegree.com/download3.php?q=volume-cones-spheres-cylinders-kuta-software.pdf PDF link annotation
    • http://uncpbisdegree.com/download4.php?q=volume-cones-spheres-cylinders-kuta-software.pdfIn PDF document text
    • http://www.kutasoftware.com/freeige.htmlIn PDF document text
    • http://www.meteodirect.org/tr/im/treasures_imperial_japan_collection_exhibition.pdfIn PDF document text
    • http://riverside-resort.net/1/tnpsc-group-2-exam-question-papers-with-answers-in-tamil-2018.pdfIn PDF document text
    • http://riverside-resort.net/1/sigma-spectrum-quick-reference-guide.pdfIn PDF document text
    • http://riverside-resort.net/1/symphony-ft30-headphone-solution.pdfIn PDF document text
    • http://riverside-resort.net/1/ssc-fci-exam-2018-answer-key.pdfIn PDF document text
    • http://riverside-resort.net/1/solution-manual-for-performance-management-herman-aguinis.pdfIn PDF document text
    • http://riverside-resort.net/1/the-mixing-engineers-handbook-third-edition.pdfIn PDF document text
    • http://riverside-resort.net/1/social-behaviour-in-animals-1st-edition.pdfIn PDF document text
    • http://riverside-resort.net/1/slaughterhouse-five-kurt-vonnegut.pdfIn PDF document text
    • http://riverside-resort.net/1/the-significance-of-the-micronutrient-boron-in-agriculture.pdfIn PDF document text
    • http://riverside-resort.net/1/toefl-junior-practice.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.dictionary.com/e/s/word-of-the-year-list/In PDF document text
    • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409In PDF document text
    • https://go.microsoft.com/fwlink/?linkid=868922In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617297In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3480 10328 bytes
SHA-256: e16384ea451a19fdb9174737aa1f42b2d56137629412ca24fe8d164386ef18f8
font_01_sfnt_off00005534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5534 6988 bytes
SHA-256: dd7f80c1c3c728bb4b5eac12ef5dbbea5a483861d71c937501f331b57ae23513