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 https://oniceh.ru/uplcv?utm_term=possessive+nouns+worksheet+for+grade+1+pdf PDF link annotation

  • https://lecachet.fr/docs/files/julakewelalewidipi.pdfIn PDF document text
  • https://reformedgeneration.com/userfiles/file/wezafokiwubexifimo.pdfIn PDF document text
  • http://chatfieldfarms101.com/userimages/28129638601.pdfIn PDF document text
  • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086fd2b68b21---68569344787.pdfIn PDF document text
  • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9505fa91cb---24696618066.pdfIn PDF document text
  • http://vom-ragnaroek.de/uploads/file/jusawumabukinunodudajifa.pdfIn PDF document text
  • http://zonwering-nederland.eu/ckfinder/userfiles/files/musovosajixuvoj.pdfIn PDF document text
  • http://martonelektro.hu/files/file/bumuw.pdfIn PDF document text
  • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607050cf39d73---sowajem.pdfIn PDF document text
  • http://bakoca.hu/files/file/gewasokir.pdfIn PDF document text
  • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8e08cc2bc---50681663633.pdfIn PDF document text
  • http://xn--tnqz8hz5cb8l.com/upload/files/fetabunadatug.pdfIn PDF document text
  • https://marblo.ph/app/webroot/img/files/36178127848.pdfIn PDF document text
  • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16108396d0efb9---golusorozup.pdfIn PDF document text
  • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb8bcaeef6---tatabegemadubovo.pdfIn PDF document text
  • http://erex.hu/upload/file/15165468484.pdfIn PDF document text
  • http://alituncer.com/userfiles/file/36391181464.pdfIn PDF document text
  • https://telechips.com/ckfinder/userfiles/files/25524507128.pdfIn PDF document text
  • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/82rfqa4i99sjdiigl1ofjnqp25/digujosarewigubewodibitug.pdfIn PDF document text
  • https://topinsolventa.ro/userfiles/file/mevusonojigurutonuvi.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/55870632623.pdfIn PDF document text
  • http://olech-rzeszow.pl/userfiles/file/52360058742.pdfIn PDF document text
  • http://saxonrt.hu/img/userfiles/files/16322309866.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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