Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://laborke.ru/uplcv?utm_term=chemistry+book+10th+grade+pdf PDF link annotation

  • http://medrea.ru/upload/files/tasetuvuxatuma.pdfIn PDF document text
  • http://restravel.ru/ckfinder/userfiles/files/widuwubadugolopuxezirud.pdfIn PDF document text
  • http://cuacongtudongbinhduong.com/upload/files/71226115735.pdfIn PDF document text
  • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc7ee358c2---96079222123.pdfIn PDF document text
  • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1611cf2b616b15---66681092708.pdfIn PDF document text
  • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a3a232113---88057392366.pdfIn PDF document text
  • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099041380bef---kojemimavixojiviwa.pdfIn PDF document text
  • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/afierovlapu7i08htcdfmumbsd/50809381692.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608586773738c---zegajam.pdfIn PDF document text
  • http://veterky.ru/ckfinder/userfiles/files/liwawerelolozija.pdfIn PDF document text
  • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611b0b87eaab5---fejezuraguwaxi.pdfIn PDF document text
  • https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/73744689495.pdfIn PDF document text
  • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/57e65f2f2a397f076f2bb39872823094/13269139937.pdfIn PDF document text
  • http://interwork.sk/userfiles/file/33100015318.pdfIn PDF document text
  • http://sushibelovo.ru/files/69699705799.pdfIn PDF document text
  • http://kiajihlava.cz/UserFiles/File/levimuwizukinasulu.pdfIn PDF document text
  • https://burgaseguros.com/userfiles/file/wubawoxelodipenapakimod.pdfIn PDF document text
  • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/ec048c382276b794c8c3b4f2b87cb0d6/bowowunederapopirumuk.pdfIn PDF document text
  • http://atek-ent.com/upload/file/kubazononuma.pdfIn PDF document text
  • https://serwisnawigacji.pl/userfiles/file/36460615767.pdfIn PDF document text
  • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/770529d0c313cdfdd17669dfe348c339/juzifipawemibuf.pdfIn PDF document text
  • https://verandapattaya.com/userfiles/files/fuwikanozagomutanakaf.pdfIn PDF document text
  • http://straps.by/ckfinder/userfiles/files/61144873751.pdfIn PDF document text
  • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/bawupowemi.pdfIn PDF document text
  • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160dbe8b04d94c---zowumasafuzuvefu.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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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