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 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://coretry.ru/uplcv?utm_term=prepare+5+student%27s+book+pdf PDF link annotation

  • https://dcicz.org/userfiles/file/devirusajelitamidebi.pdfIn PDF document text
  • https://www.benkorner.nl/admin/library/ckfinder/userfiles/files/xuronekegugipogum.pdfIn PDF document text
  • http://xn--h49al71atridzo.com/userData/board/file/21387559766.pdfIn PDF document text
  • http://skontrolsengineering.com/file_media/file_image/file/melezapeferonix.pdfIn PDF document text
  • https://breedlife.com/upload/files/5146725387.pdfIn PDF document text
  • https://doublehaircenter.com/upload/ckfinder/files/32709247786.pdfIn PDF document text
  • http://archiw.bibliotekalesmierz.eu/img/upload/files/56100999914.pdfIn PDF document text
  • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1613904b8a5b7c---11828551465.pdfIn PDF document text
  • https://plentis.eu/ckfinder/userfiles/files/jegadexolepamafefa.pdfIn PDF document text
  • http://myphamhelios.vn/luutru/files/dugaximivurubu.pdfIn PDF document text
  • http://dungcumaymoc.com/Images_upload/files/17442074805.pdfIn PDF document text
  • https://krygina40.ru/UserFiles/File/6122278529.pdfIn PDF document text
  • http://polymer-optix.de/userfiles/file/48561128090.pdfIn PDF document text
  • https://eguiders.com/uploads/694042669.pdfIn PDF document text
  • http://ifaistos.reality.gr/~triantaf/images/file/fuduxewiwavarojage.pdfIn PDF document text
  • http://www.taimaobi.com/admin/ckfinder/userfiles/files/fixifaridunapuk.pdfIn PDF document text
  • http://kowalstwwo.pl/public/cms/images/file/ligimum.pdfIn PDF document text
  • https://igk-lilienthal.de/downloads/38264659703.pdfIn PDF document text
  • https://u15.ch/ckfinder/userfiles/files/90660199816.pdfIn PDF document text
  • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1612f152ab3ceb---80128104411.pdfIn PDF document text
  • http://nbc.ua/design/pic/file/19551411244.pdfIn PDF document text
  • https://rougezenekar.hu/files/file/zizumazejif.pdfIn PDF document text
  • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613a908f4d56d---40866157386.pdfIn PDF document text
  • https://ipekyolumedya.com/resim_galeri/file/xepovexi.pdfIn PDF document text
  • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16136270997470---34464618707.pdfIn PDF document text
  • http://irinabailey.com/upload/files/46301428603.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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