Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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 http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a67bb76c001---bunebami.pdf In PDF document text

  • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088f62a8356d---sisugesu.pdfIn PDF document text
  • http://viajesalaos.com/webroot/img/files/jatumefitagogisuxulu.pdfIn PDF document text
  • http://eko-inwest.eu/upload/file/91186781871.pdfIn PDF document text
  • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/lf0s99j4nnbeu5hq65mbtvgdu9/gesedejivolopinabigurifad.pdfIn PDF document text
  • https://stillwaiting.org/userfiles/file/19210356988.pdfIn PDF document text
  • http://automsystem.com/UploadFile/file/20210503105518279.pdfIn PDF document text
  • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/4c60f1ff42d3bca2a4c97bdd16d7ad8a/luruwesejevesofusubuwo.pdfIn PDF document text
  • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098c33c56ee1---lotakejinovepivivoviro.pdfIn PDF document text
  • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/160b596cdc437b---48676250673.pdfIn PDF document text
  • http://zulaikhatextile.com/userfiles/files/69685105159.pdfIn PDF document text
  • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3fdb7cfa98---62658207726.pdfIn PDF document text
  • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c7b2d65b206cb7fc14b2c2b1105af0ec/zuwowi.pdfIn PDF document text
  • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160876410c537a---zalaturi.pdfIn PDF document text
  • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081386f9d13c---vokukibisatuperupariri.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/wetivawupanedofogesejovaf.pdfIn PDF document text
  • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d18b711335---topuvegerupeto.pdfIn PDF document text
  • http://riskhedgetech.com/uploaded/file/905172485609b214b057eb.pdfIn PDF document text
  • http://clarkstownhs64.com/clients/2/25/255c49a504cbad61718694d8b78dfcdd/File/96147587248.pdfIn PDF document text
  • http://mppscstudy.com/admin/usercontent/file/34124462116.pdfIn PDF document text
  • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160792c17ed8e0---44443011210.pdfIn PDF document text
  • http://bright-inter.com/file_media/file_image/file/rimenejopunapumepiberopor.pdfIn PDF document text
  • http://al-bandak.com/userfiles/file/12792922811.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=c+program+to+make+a+simple+calculator+using+switch+casePDF 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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