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.
• 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://garglob.ru/uplcv?utm_term=excel+see+worksheets+side+by+side PDF link annotation

  • https://inwestorfinanse.pl/userfiles/file/78257024111.pdfIn PDF document text
  • http://barudan.hk/UploadFile/file/20210823233443300.pdfIn PDF document text
  • http://toyteepee.com/uploadfiles/file/210515062856265449agmp2b.pdfIn PDF document text
  • http://wksystems.net/HotelEstimator/userfiles/file/43207893849.pdfIn PDF document text
  • http://cuakeobinhduong.com/upload/files/45697659149.pdfIn PDF document text
  • http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/73632184453.pdfIn PDF document text
  • http://cerescommoditiesltd.com/Images_upload/files/bolivapodupuxirem.pdfIn PDF document text
  • http://dayou.tw/uploadpic/files/202109020530291617.pdfIn PDF document text
  • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/4da5c7234d26a0d0f11ab5ac65d208a7/xolofovigiwepax.pdfIn PDF document text
  • http://yjbiotech.cn/upload/files/1732836521.pdfIn PDF document text
  • https://foundryindia.org/userfiles/file/sukezupawagane.pdfIn PDF document text
  • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160afd7ffb330a---98894242607.pdfIn PDF document text
  • http://tdbakademi.org/userfiles/files/rarakufu.pdfIn PDF document text
  • https://ventadeterrenosurbanos.com/userfiles/file/xexujigopaxaliwowuwekidil.pdfIn PDF document text
  • http://extracam.es/app/webroot/arxius/file/38648456493.pdfIn PDF document text
  • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/272565e10a11424b3cf941b45d5459c7/muwijikumojalijavazok.pdfIn PDF document text
  • http://windowsplusllc.com/ckfinder/userfiles/files/radesanenizo.pdfIn PDF document text
  • http://rocincorporated.com/domain.com/images/dynamic_pages/file/3794260681.pdfIn PDF document text
  • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abc8502236d---winupoxevilig.pdfIn PDF document text
  • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ebac20287---58925000550.pdfIn PDF document text
  • http://wine-paraphernalia.com/files/winep/_repo/file/nazolobowozudajuvoza.pdfIn PDF document text
  • http://thedewakohchang.com/image/upload/File/4100469954.pdfIn PDF document text
  • https://arhometutor.com/userfiles/file/76865356295.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/k7b36lb73fhk8lthtd86vqfh42/99707725454.pdfIn PDF document text
  • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607861dba729a---42971554220.pdfIn PDF document text
  • https://hyosung-gulf.com/uploads/file/73710881659.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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