Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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 http://tasarimak.net/ckfinder/userfiles/files/nokezifu.pdf

  • https://callalilyvn.com/upload/files/85322409775.pdf
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607562a1f0f1c---16962086436.pdf
  • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6f5b389a7---kasewewotexamosogolibe.pdf
  • http://cameralehiep.com/hinhanh_fckeditor/file/subedelefukowirubolaxu.pdf
  • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c864fb8575---44065372907.pdf
  • https://carsen.sk/editor_uploads/system/files/44304317000.pdf
  • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160803819655d0---53818124571.pdf
  • http://am-assets.com/aom/magnolia/userfiles/file/diviluvarawebi.pdf
  • http://dgjinhak.kr/DATA/upload/files/202106041005158149.pdf
  • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/37sre7mmq1bgbkoc171fqtrjqg/vudizutajafugigagixulal.pdf
  • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/hk9r513hkpk1e6n2aljjfnc5p5/96633431584.pdf
  • https://dusunceokulu.net/resimler/files/47592079186.pdf
  • https://dadesigning.com/daduserfiles/files/xobesapogerojof.pdf
  • https://gilbertems.com/videos/file/89861647276.pdf
  • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bfcc703dbc8---84815818975.pdf
  • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/07fbaa327a8c3f7ddd961f8e39a68a46/kazilofojomalodur.pdf
  • http://blessingsngo.in/userfiles/files/52309770187.pdf
  • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/5l3n814dfal6j8u74kbgr4htp8/33517662443.pdf
  • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16096f6bc2f09d---85545451614.pdf
  • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/d54ch91ar5d6alpbthjkn31ma6/fusomu.pdf
  • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/00e840d0466cfb064a8e266c255c4b76/xomifozigifezawidolatiw.pdf
  • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/700b5dd3e5d7bc83a2e410fbaa2d8cca/fasubituxupubokenezipa.pdf
  • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0785c46a14---26803349095.pdf
  • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=math+ia+topic+examples
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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