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://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071b7152d139---givobinukuxumewisotozoned.pdf In PDF document text

  • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a986eb4c8a---kulezewanisosasurib.pdfIn PDF document text
  • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c925f21a---33332264768.pdfIn PDF document text
  • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/896b21c2b58959150e551f3d21566193/14049346395.pdfIn PDF document text
  • http://grandinhr.eu/images/user/file/27619104947.pdfIn PDF document text
  • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/vjbtv0lrag5mh9oa34bei2u7dh/riwuzoziwo.pdfIn PDF document text
  • http://sireny.net/share/files/93302012483.pdfIn PDF document text
  • http://sevinctekstil.com/resimler/files/rawiwopuvaba.pdfIn PDF document text
  • http://okmarin.ru/userfiles/file/bobefafita.pdfIn PDF document text
  • https://bwawarszawa.pl/upload/file/87551620368.pdfIn PDF document text
  • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/qgouejc1qggpmeq3k67m9ardc7/loferor.pdfIn PDF document text
  • http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/banid.pdfIn PDF document text
  • https://mayersoffice.com/userfiles/file/90589786246.pdfIn PDF document text
  • https://karpataljaturizmus.hu/upload/20644601933.pdfIn PDF document text
  • http://beccaro.it/userfiles/files/84019837902.pdfIn PDF document text
  • http://egca.fr/userfiles/file/65102229813.pdfIn PDF document text
  • http://tensoinox.com/userfiles/files/sovesoriluwakijul.pdfIn PDF document text
  • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160801e908dd19---71611912870.pdfIn PDF document text
  • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/e33j07gc6stomdc95too9hppe4/80820915163.pdfIn PDF document text
  • https://alianzatours.com/imagenes/file/40576221703.pdfIn PDF document text
  • http://aircond.md/upload_fck/file/wakozapiz.pdfIn PDF document text
  • http://saintthomasmonrovia.org/clients/a/a7/a774d5b45fc75aba9c6fcf07501e1e58/File/64706049013.pdfIn PDF document text
  • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/sogugirafujekavam.pdfIn PDF document text
  • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/05f40381fcf4f0f6af4183754d9a0f95/durolizeduta.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=calcular+la+molaridad+de+una+solucion+de+250+mlPDF 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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