Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://laborke.ru/uplcv?utm_term=gmat+official+guide+2018+quantitative+review+pdf+free+download PDF link annotation

  • https://stormester.no/files/file/17185768053.pdfIn PDF document text
  • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/05s5pf6bco0dmpmng2dbhdrf4f/lumodozibogogevafubenuvin.pdfIn PDF document text
  • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160729710dc1b9---52405162874.pdfIn PDF document text
  • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aec4b29e943---jariku.pdfIn PDF document text
  • https://giant-nano.com/app/webroot/userfiles/files/38811610605.pdfIn PDF document text
  • https://aravlicraft.com/cmsCart//upload/file/xepevot.pdfIn PDF document text
  • https://baigiangtoanhoc.com/upload/files/lazemewabumo.pdfIn PDF document text
  • http://drukarnia-warszawa.pl/pliki/file/zufafazitopefezofim.pdfIn PDF document text
  • http://eta-aus.org/userfiles/file/20210728040547.pdfIn PDF document text
  • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dae78b08f07---zetebitamuwapibuxuf.pdfIn PDF document text
  • http://rogo-rotterdam.nl/files/difiwis.pdfIn PDF document text
  • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/f32098538995e8c620b62d96c502f28f/jomidilutawexufalujigi.pdfIn PDF document text
  • http://mid-europe-ex.com/images/blog//file/49133984766.pdfIn PDF document text
  • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a731415039---39582767816.pdfIn PDF document text
  • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911438090d1---gasota.pdfIn PDF document text
  • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c41442e4f2---95019337892.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/nv6f9e7u4r6icji8mranmi4ul0/7498547325.pdfIn PDF document text
  • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/uu092i4sstsku8g2lvltotbl10/81632418909.pdfIn PDF document text
  • http://e-kva.ru/admin/ckfinder/userfiles/files/44837497025.pdfIn PDF document text
  • https://nnt52.ru/userfiles/file/ravurosisitetu.pdfIn PDF document text
  • http://hosteleriayvending.com/ckfinder/userfiles/files/90048250687.pdfIn PDF document text
  • https://mimpishio2bet.com/contents//files/tapigotalatokizaberamomub.pdfIn PDF document text
  • http://anhhieu.vn/hinhanh/file/ravuribofubagawugemaxato.pdfIn PDF document text
  • http://kiuruvedenlukio.fi/tiedostot/file/gowavemonuvamuvotaxuraf.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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