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 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://infrive.ru/uplcv?utm_term=3ds+download+apk PDF link annotation

  • http://aaaexpressac.com/userfiles/file/funupezopujulibamago.pdfIn PDF document text
  • http://pphu-joanna.pl/fckpliki/file/lebozaguraxurikifew.pdfIn PDF document text
  • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/goe65176eior69pqo907mou2si/zesesewitigixumof.pdfIn PDF document text
  • http://burelomdo.com/ckfinder/userfiles/files/48609288597.pdfIn PDF document text
  • https://mgs-on-track.com/app/webroot/userfiles/file/popojufivevum.pdfIn PDF document text
  • http://kamienneogrody.com/userfiles/file/boragikogifabow.pdfIn PDF document text
  • http://architettosirocco.it/userfiles/files/70979778203.pdfIn PDF document text
  • http://tranindo.com/Uploads/userfiles/files/jiloxefem.pdfIn PDF document text
  • http://intelekt.biz/uploads/pages/files/bediwev.pdfIn PDF document text
  • http://pzhjintai.com/upload/files/48225024296.pdfIn PDF document text
  • http://2sisaccount.com/userfiles/files/28126786150.pdfIn PDF document text
  • http://tvsatkrosno.pl/userfiles/file/96419278072.pdfIn PDF document text
  • http://apex-architect.ru/images/file/10766648166.pdfIn PDF document text
  • http://thefarmatarapahoecounty.com/userimages/18944124436.pdfIn PDF document text
  • http://www.santabriganti.org/admin/ckfinder/userfiles/files/jabonasogivulib.pdfIn PDF document text
  • https://internationallanguagenavigators.com/media/juverapolumuna.pdfIn PDF document text
  • http://xn--66-6kc8bfmkmjd.xn--p1ai/admin/ckfinder/userfiles/files/labasuzotej.pdfIn PDF document text
  • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/a13248b826be626491787190a4a9a535/tutur.pdfIn PDF document text
  • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613d56dca0cc1---xotutazepamaritaxevudomib.pdfIn PDF document text
  • http://rheinmotel.com/userfiles/file/38522518636.pdfIn PDF document text
  • http://lagerunda.it/public/upload/file/79238913547.pdfIn PDF document text
  • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/2abcd36293077a2ee827b31cf4359efa/jezuzunudop.pdfIn PDF document text
  • https://tucarrorentacar.co/ckfinder/userfiles/files/texurididategedefesesepim.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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