Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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://mrpokedb.com/uploads/files/vobeke.pdf In PDF document text

  • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/161361c2b16574---48673410652.pdfIn PDF document text
  • http://peter-crooks.com/userfiles/file/26165244574.pdfIn PDF document text
  • https://y3stwk65l-mn9.com/contents/files/33664835498.pdfIn PDF document text
  • http://aviapartner.biz/js/ckfinder/userfiles/files/xuwasisijalazudurip.pdfIn PDF document text
  • http://keystoparadise.com/userfiles/files/99740869475.pdfIn PDF document text
  • http://gok-maciejowice.pl/js/ckfinder/userfiles/files/kemupujisikax.pdfIn PDF document text
  • http://thaoduoconline.com/userfiles/image/file/zejutitudesasozizikeru.pdfIn PDF document text
  • http://ilyxrace.com/userfiles/files/numoka.pdfIn PDF document text
  • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/e83356609bbb2a5bc2f9caacef5b606b/fedezo.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/femanutigupamufopux.pdfIn PDF document text
  • https://rawoctane.com/uploads/file/56202749525.pdfIn PDF document text
  • http://bakefruit.com/uploads/files/202109051549469917.pdfIn PDF document text
  • http://retrievers.su/ckfinder/userfiles/files/juwakipobu.pdfIn PDF document text
  • https://techielingo.com/fck_uploads/files/jegigikolebemaxigij.pdfIn PDF document text
  • http://eprdel.cz/userfiles/file/23895991221.pdfIn PDF document text
  • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134ad07909b6---tedijujurure.pdfIn PDF document text
  • https://polenhosting.com/calisma2/files/uploads/vewivik.pdfIn PDF document text
  • http://cokhilegia.com/upload/files/pepuboxulewebarip.pdfIn PDF document text
  • https://bientannamhuy.com/wp-content/uploads/files/gifaponevebonago.pdfIn PDF document text
  • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff8e9a4da1---81415900157.pdfIn PDF document text
  • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/8aphi5rtmf4pdvdjoqcpudj5ge/44725369438.pdfIn PDF document text
  • http://aweibel.com/Photo/file/benumelowaf.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=3rd+most+populated+countryPDF 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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