Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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 http://straub-online.ch/userfiles/files/51651019399.pdf In PDF document text

  • http://goldendoodlesofthesierranevadas.com/userfiles/file/76684533190.pdfIn PDF document text
  • http://arredamentoambienti.it/img/file/30022243833.pdfIn PDF document text
  • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/5d58ln69bkd95u0enkf331arbg/jipiriwogedasudibuzapu.pdfIn PDF document text
  • http://expnavi.com/sites/all/sites/default/files/file/96149384777.pdfIn PDF document text
  • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613357e35bba3---24633368117.pdfIn PDF document text
  • http://mega-stainlesssteel.com/uploads/image/files/jijazakatudapo.pdfIn PDF document text
  • http://skene.es/userfiles/file/83242410063.pdfIn PDF document text
  • https://grootformaatspandoeken.nl/userfiles/file/23342895775.pdfIn PDF document text
  • https://chinatupai.com/web/js/ckfinder/userfiles/files/mimavudozowulevodizu.pdfIn PDF document text
  • https://adikkeempat.com/contents/files/11938206966.pdfIn PDF document text
  • http://shippingengineering.com/files/ckeditorothers/vubiwoderoduzaraka.pdfIn PDF document text
  • http://getrade.net/uploadfiles/file/51603086752.pdfIn PDF document text
  • http://vangphutai.com/images/uploads/files/47631745207.pdfIn PDF document text
  • http://kortennis.co.kr/B/ck/ckfinder/userfiles/files/92766661898.pdfIn PDF document text
  • http://v-lukomorie.com/uploader/files/fedajebafinokala.pdfIn PDF document text
  • http://ristoranteibucanieri.it/userfiles/files/rigadodatisagojunuridover.pdfIn PDF document text
  • http://educasters.co/ckfinder/userfiles/files/rusiwezegejiwe.pdfIn PDF document text
  • http://freeware-software-download.de/uploads/editor/file/2703611331.pdfIn PDF document text
  • http://bsa-billiard.by/images_from_html_editor/file/38713500194.pdfIn PDF document text
  • http://littlepearlspublishing.in/data/eimages/file/65132398884.pdfIn PDF document text
  • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/32d02e40057936c9f6fff40117100da7/tewik.pdfIn PDF document text
  • https://nulifeus.com/~nulife/userfiles/file/gonomigupalaripumilabu.pdfIn PDF document text
  • http://jyczgj.com/UploadFiles/file///2021091514095487.pdfIn PDF document text
  • https://fertilizergranulatorprice.com/d/files/gegukokeveverujexe.pdfIn PDF document text
  • https://smshealthcareservices.com/ckfinder/userfiles/files/narubivejakejagajenujege.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=to+have+knowledge+on+somethingPDF link annotation
  • 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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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