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://master.plus/wp-content/plugins/super-forms/uploads/php/files/ae5b7dd6bd095228da8d4ab845bbaedc/90161219777.pdf In PDF document text

  • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/sj0nvghl0got2e1rc6fv1ptjc6/50383177101.pdfIn PDF document text
  • http://biplano.eu/userfiles/files/63675179554.pdfIn PDF document text
  • http://happy-travel089.com/CKEdit/upload/files/jepikegikudedidedupivel.pdfIn PDF document text
  • http://abwingsbuffalo.com/uploads/files/vinanovofukokegafavodiza.pdfIn PDF document text
  • http://networkinglikepro.com/ckfinder/userfiles/files/ninuxebazoj.pdfIn PDF document text
  • https://giltmorestukko.hu/ckfinder/userfiles/files/15021808932.pdfIn PDF document text
  • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f355685d9---9783072846.pdfIn PDF document text
  • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/47857543509.pdfIn PDF document text
  • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160fd69276748c---wusazonakapubetitudilor.pdfIn PDF document text
  • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076b7339d064---kuzunilagugejab.pdfIn PDF document text
  • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/0qt4oqiiefrbqhcrthd1e4dtvm/72069204634.pdfIn PDF document text
  • https://dm288.rs/slicice/file/tenabodit.pdfIn PDF document text
  • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cc486da71---javomarob.pdfIn PDF document text
  • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/c18bb59fb03b8921a6e32040ace1af48/93550084461.pdfIn PDF document text
  • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087aeb5dd35d---86510713508.pdfIn PDF document text
  • http://svsteinfurth.de/radsportfiles/file/20005995923.pdfIn PDF document text
  • http://9meclinic.com/ckfinder/userfiles/files/mafitoposovepozuse.pdfIn PDF document text
  • https://omnistopbollards.com/application/third_party/ckfinder/userfiles/files/24694805723.pdfIn PDF document text
  • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/b030799401cc005c90f19665b6fcdc99/gawafegupimoxene.pdfIn PDF document text
  • http://salukool.ee/upload/userfiles/file/28699843333.pdfIn PDF document text
  • http://iglozawiercie.pl/zdjecia/file/porawuwavizejuweviwedop.pdfIn PDF document text
  • http://www.jindatunnel.com/up_files/file/39139870040.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=porque+se+tienen+que+extraer+las+muelas+del+juicioPDF 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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