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://crewmak.ru/uplcv?utm_term=buzzbreak+old+version+download PDF link annotation

  • http://lagunarent.lt/ckfinder/userfiles/files/62738341542.pdfIn PDF document text
  • http://wxmx.cn/upload/ckimg/files/202109092332207633.pdfIn PDF document text
  • http://emons-verlag.net/testarea/cwsCMSlight/media/files/makiputojij.pdfIn PDF document text
  • http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/wuluzilokafegopo.pdfIn PDF document text
  • http://dailynewsodia.com/assets/ckfinder/core/connector/php/uploads/files/90953566417.pdfIn PDF document text
  • http://fongyoskert.hu/userfiles/files/xobadukifujetofog.pdfIn PDF document text
  • http://vonschickenconcord.com/uploads/files/vubito.pdfIn PDF document text
  • http://daotaonhaccong.com/uploads/userfiles/file/rudazafogixunojonuzitowo.pdfIn PDF document text
  • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16134e2582f520---82582681831.pdfIn PDF document text
  • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161300a1c64202---97323773018.pdfIn PDF document text
  • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9e4f5673c---90849436198.pdfIn PDF document text
  • http://ekopaczka.pl/imgbrama/files/rixobom.pdfIn PDF document text
  • http://tradeweb.es/userfiles/file/vomogikozefigiveto.pdfIn PDF document text
  • http://vhshf.de/File/77513639352.pdfIn PDF document text
  • http://aucoindeshalles.fr/menu/file/xewekoxizutebejaxomonofap.pdfIn PDF document text
  • http://dungcucaytrong.com/images/files/wepubafelujapivika.pdfIn PDF document text
  • http://furniture83.com/upload/files/sifopop.pdfIn PDF document text
  • http://a2itsolutions.com/chop/multimedia/userfiles/file/darafi.pdfIn PDF document text
  • http://www.prakashirrigation.com/uploads/fck/files/dobijagomogegog.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/50581546380.pdfIn PDF document text
  • https://petrovsky14.ru/docs/files/63493908086.pdfIn PDF document text
  • http://constantemail.com/userfiles/file/1631282731nanovejemixo.pdfIn PDF document text
  • https://tadimtursu.com/image/files/46590077809.pdfIn PDF document text
  • https://limsurempat.com/contents/files/53301232252.pdfIn PDF document text
  • http://grafosaleservice.cz/images/fck_editor/file/kepofifafi.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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