Malicious PDF — malware analysis report

Heuristics 7

• 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 https://ndmoyun.com/calisma2/files/uploads/80180652991.pdf In PDF document text

  • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6cc450e12---62532908003.pdfIn PDF document text
  • http://puginternational.com/ckfinder/userfiles/files/pexoxejesexebugose.pdfIn PDF document text
  • http://rosesrealtyhomes.com/userfiles/files/puvibapizagukimuwut.pdfIn PDF document text
  • http://youngthisyear.com/ckfinder/userfiles/files/38951916927.pdfIn PDF document text
  • https://jmbarrenetxea.soinuenea.eus/files/galeria/files/89958155696.pdfIn PDF document text
  • https://mabuksusu.com/contents/files/26078724143.pdfIn PDF document text
  • https://www.travelknowhowscotland.co.uk/assets/js/ckfinder/userfiles/files/39214026179.pdfIn PDF document text
  • https://djecijagarderoba.me/userfiles/file/genizezedotanimusatowos.pdfIn PDF document text
  • http://dga.gr/ILC/img/file/30760895660.pdfIn PDF document text
  • http://lustigersteirer.at/userfiles/file/gojijepisabovosiwil.pdfIn PDF document text
  • http://ipsgroupjjn.org/userfiles/file/45151317052.pdfIn PDF document text
  • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614076104ec5f---98852436838.pdfIn PDF document text
  • http://saipanbooking.com/FileData/ckfinder/files/20210911_5D12E86CF8D4B8EA.pdfIn PDF document text
  • https://duel.pl/userfiles/file/rulanunewu.pdfIn PDF document text
  • http://plaschke-partner.com/uploaded/file/femerosobesu.pdfIn PDF document text
  • http://dermatologomiguelgallego.com/miguel/fck/file/gofawajituviti.pdfIn PDF document text
  • http://zoo-foto.cz/userfiles/file/vajugagigebinatatemujarel.pdfIn PDF document text
  • http://edu-family72.ru/content/images/uploads/file/25009262701.pdfIn PDF document text
  • http://dejede.com/userfiles/file/84627268415.pdfIn PDF document text
  • http://thienminhgroup.com/uploads/userfiles/file/besip.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/4kigilemqd3om8f3utjqocv363/82551744918.pdfIn PDF document text
  • http://casadiriposomarsala.it/userfiles/files/51107475185.pdfIn PDF document text
  • http://esipro.fr/userfiles/file/292375383.pdfIn PDF document text
  • http://zopos.zohukum.com/ckfinder/userfiles/files/43004540914.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=android+11+for+redmi+note+9sPDF 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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