Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ec4863181058ac…

MALICIOUS

PDF

71.8 KB Created: 2021-03-01 23:46:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3bebd9bbf9a8f0888e1aaae322b1eafc SHA-1: 69fffef3279f369b177d8eea94464e3a26607e61 SHA-256: 20ec4863181058acdb0e08220bc105f0090bca4c234f6c6382fb6c042ed23f9f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://bologen.ru/wix?keyword=nca+cheer+camp+2020+cancelled PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444636/normal_5fdc88a9689a6.pdfIn PDF document text
    • http://wimuzawoxi.getenjoyment.net/logo_design_company_in_usa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453888/normal_5fc5f45b7f086.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460460/normal_6034263ca217a.pdfIn PDF document text
    • http://repair-kompov.ru/c4elink_music_appreciation_final_examn9g93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470016/normal_6024c63498d4c.pdfIn PDF document text
    • http://bigijawiv.scienceontheweb.net/babanaxopakexulotafasalon.pdfIn PDF document text
    • http://lofoporubatul.mygamesonline.org/katebix.pdfIn PDF document text
    • http://rollernefrit.xyz/best_answer_for_are_you_a_virgintb22n.pdfIn PDF document text
    • http://sait-ok.ru/365729225533i5rs.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/making_customs_declarationssc45z.pdfIn PDF document text
    • http://wonnaturila.space/52989575891mduzd.pdfIn PDF document text
    • http://kyrgyztours.com/vojuxadorovianeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/kutisejatasopilagenegap.pdfIn PDF document text
    • http://xakagigoneliv.myartsonline.com/business_analytics_definition_by_authors.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/online_book_reader.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/mibovalulijegoxudokexu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC40 5380 bytes
SHA-256: 26a1136d7db85c74a7d9cdb3afe2609725fb7a3a2310608065287b98f5977f41
font_01_sfnt_off0000ee5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5E 10620 bytes
SHA-256: 7d080a306358a524e7abe7f8757a9f03a4f6af67b011036d596d4ab90c7316ec