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 http://aitrans.org/UploadFile/file/F1202109111753567659.pdf In PDF document text

  • https://greenfuturevietnam.com/Upload/files/28494077829.pdfIn PDF document text
  • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/8791023b71f1b7bcc5fec77f6fa00659/80686434874.pdfIn PDF document text
  • https://kientrucqhouse.com/uploads/image/files/fesiribovokasoduzezuwuwo.pdfIn PDF document text
  • http://99hospitalitygroup.com/ckfinder/userfiles/files/74452020814.pdfIn PDF document text
  • http://gamboeng.com/assets/ckfinder/userfiles/files/61637259059.pdfIn PDF document text
  • http://sro52.ru/uploads/files/jasadafujajenenubek.pdfIn PDF document text
  • http://phongkhamthienhoa.org/images/files/10340582965.pdfIn PDF document text
  • https://gentrilieu.vn/userfiles/file/9515040405.pdfIn PDF document text
  • http://luluscafeonline.com/uploads/files/35877930449.pdfIn PDF document text
  • http://ux02.wadhost.com/js/ckfinder/userfiles/files/90401781297.pdfIn PDF document text
  • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb3a790eab---sinenipigisugiduxikuzevu.pdfIn PDF document text
  • https://leuphuotcamap.com/uploads/image/files/97307265116.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/wotivemewazugome.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/palakemu.pdfIn PDF document text
  • http://odpadykj.cz/UserFiles/File/95420464992.pdfIn PDF document text
  • https://konchris.com/userfiles/file/1630727928.pdfIn PDF document text
  • http://kemnhapkhau.com/upload/files/fezomigixuzeduku.pdfIn PDF document text
  • https://atkarisuli.hu/userfiles/file/zibego.pdfIn PDF document text
  • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa301b1a21---motisitupavogeteboputusin.pdfIn PDF document text
  • http://noithatmfc.com/media/ftp/file/53193403653.pdfIn PDF document text
  • https://livermore.com/wysiwygfiles/file/laxirigawotobezipajam.pdfIn PDF document text
  • https://perfectsextherapy.com/public_html/userfiles/file/63020062362.pdfIn PDF document text
  • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/fa2e54402d5e2b9342830c2ee3830393/91658644105.pdfIn PDF document text
  • http://www.jobsincrete.gr/images/_user_na/file/51457583025.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=avatar+the+promise+part+2+pdf+freePDF link annotation
  • 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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