Malicious PDF — malware analysis report

Heuristics 9

• 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.
• JavaScript action low 1 related finding PDF_JAVASCRIPT
  PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://crewmak.ru/uplcv?utm_term=6th+class+science+textbook+pdf+download PDF link annotation

  • https://actsonics.com/uploads/files/202109062019107354.pdfIn PDF document text
  • http://www.ville-civaux.fr/admin/js/ckfinder/userfiles/files/43050229675.pdfIn PDF document text
  • http://aktifmedya.com/dosyalar/files/fifokixodadufasuderagavax.pdfIn PDF document text
  • http://cx-gl.hu/images/files/63201731505.pdfIn PDF document text
  • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/46f78abe78332b25b86c4787fe45a78a/fawebuwabiwipoketem.pdfIn PDF document text
  • https://saleskerala.com/ckfinder/userfiles/files/nuwadonos.pdfIn PDF document text
  • http://hajnysport.cz/FCK_userfiles/file/getufebuxuvowitugagabize.pdfIn PDF document text
  • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/df055f538abc0df37c8f75bc58aa2d36/22591894043.pdfIn PDF document text
  • http://emilygrilltogo.com/uploads/files/57355854181.pdfIn PDF document text
  • https://bomando.bomsolar.com/uploadfiles/files/51727470250.pdfIn PDF document text
  • https://dacinsara.ro/fckfiles/file/61805293697.pdfIn PDF document text
  • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/943736fe7df358b839698436d847ed86/doditulusaretek.pdfIn PDF document text
  • http://sofia-es.tokyo/yamituki-n/uploads/files/duxurovizupurajosi.pdfIn PDF document text
  • http://boxshop.mn/userfiles/files/bemesatuluripoge.pdfIn PDF document text
  • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130839a1551e---waxetorutumolovone.pdfIn PDF document text
  • http://fundacjaproartis.pl/javascript/ckfinder/userfiles/files/22409154654.pdfIn PDF document text
  • https://asmitahrgroup.com/ckfinder/userfiles/files/gefigujenoko.pdfIn PDF document text
  • http://stsaischoolamritsar.com/slbdavbatala/userfiles/file/83372041309.pdfIn PDF document text
  • http://teplorium.su/userfiles/file/52056374957.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/86006360430.pdfIn PDF document text
  • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/161417b6f448af---6207375470.pdfIn PDF document text
  • https://vgk.tw/upfile/files/2021/10/01/jorukolamuruwaniza.pdfIn PDF document text
  • http://acmemask.com/upfiles/editor/files/giwunikop.pdfIn PDF document text
  • https://bostoncake888.com/UserFiles/files/44008149977.pdfIn PDF document text
  • https://sailstudy.in/ckfinder/userfiles/files/21351634398.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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