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://medvor.ru/uplcv?utm_term=manual+de+instru%C3%A7%C3%B5es+da+impressora+laserjet+m1132+mfp PDF link annotation

  • https://smartech.lv/sites/smartech/uploads/documents/files/jomunuta.pdfIn PDF document text
  • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/b9df9ff6f328dd1377f6c28344e892e6/tefawasufezodowenu.pdfIn PDF document text
  • http://chi-kara.net/Upload/files/vetegasipiw.pdfIn PDF document text
  • https://ratsimae.ee/media/contents/file/vakuderozosugexatiban.pdfIn PDF document text
  • https://ta-taiwan.com/app/webroot/userfiles/files/vixixapa.pdfIn PDF document text
  • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/5i5l5v7kgbsg6sgjijkc34lvjk/xurekojowewowipigew.pdfIn PDF document text
  • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c068e1bebc---42408302367.pdfIn PDF document text
  • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/thaeq00rvb1ftsou4k3l81mv04/komutil.pdfIn PDF document text
  • http://fotostudiovaccari.it/userfiles/files/59499592382.pdfIn PDF document text
  • http://mazurubezpieczenia.pl/zdjecia/fck/file/83759681088.pdfIn PDF document text
  • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160dfd144df840---pigobemilujasivaz.pdfIn PDF document text
  • http://cokhixnktientien.com/Images_upload/files/17109449343.pdfIn PDF document text
  • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d8dfba74d---vitumovomudojomamolufala.pdfIn PDF document text
  • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/tlis3j6umrvkp4bjm4s62uegpd/15278303224.pdfIn PDF document text
  • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a903e67d70d---26857866862.pdfIn PDF document text
  • https://goldgreiner.de/userfiles/file/namaloso.pdfIn PDF document text
  • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/5807c103cda5d130abd8022ccb6bcf72/bulatipadebojitipasezig.pdfIn PDF document text
  • https://aplusadvance.com/naver_editor/data/file/xixojimivubenejikax.pdfIn PDF document text
  • http://rucodelniza.ru/userfiles/file/jofovorobaluwiva.pdfIn PDF document text
  • http://creatinglifeoptions.com/userfiles/files/kekawa.pdfIn PDF document text
  • http://fatfailogistics.com/fckeditor/files/file/tikanibuwogatozuxojabiduk.pdfIn PDF document text
  • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/0mbla04plidc2o0aah8js4jbmv/vamogize.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/resivururolesakasitamep.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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