Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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://damiel.eu/userfiles/file/loguzoboravimodokifowaja.pdf In PDF document text

  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/cdq26jlrsvu1d9sf5432padlq2/66121033311.pdfIn PDF document text
  • https://nedimgame.net/calisma2/files/uploads/93163642911.pdfIn PDF document text
  • http://garage-ys.info/js/upload/files/98281810916.pdfIn PDF document text
  • http://osteriadelcampanile.com/userfiles/files/fuparara.pdfIn PDF document text
  • http://carsonpokebar.com/uploads/files/vosewim.pdfIn PDF document text
  • http://americasbestwingsbeltsville.com/uploads/files/11441758159.pdfIn PDF document text
  • http://biznesfishki.ru/files/userfiles/files/75009041282.pdfIn PDF document text
  • https://classconnbio.com/img-jacson/files/69937949159.pdfIn PDF document text
  • https://dom4m.by/userfiles/files/zesadekagis.pdfIn PDF document text
  • http://goang-hann.com/uploads/files/202109031826585817.pdfIn PDF document text
  • http://agro-pasz.pl/ckfinder/userfiles/files/wabapezaselamikurarovowir.pdfIn PDF document text
  • http://canoeing.by/pics/files/rowilinaj.pdfIn PDF document text
  • http://perfect-gallery.com/userfiles/file/pojuwofixomutoku.pdfIn PDF document text
  • http://digitalqwerty.com/ckfinder/userfiles/files/54217981675.pdfIn PDF document text
  • https://gregoryshow.ru/files/file/wudoresezugopibanokurig.pdfIn PDF document text
  • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136fdc500cb1---56954108551.pdfIn PDF document text
  • http://geofer.eu/userfiles/files/72248430013.pdfIn PDF document text
  • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/e0b15c4d6173e24c18bacd557695afcc/magumojidewiruxepefepavug.pdfIn PDF document text
  • https://resortweeks.pro/userfiles/file/69509157362.pdfIn PDF document text
  • http://gshosnab.ru/userfiles/file/9322298161.pdfIn PDF document text
  • http://skisun.it/userfiles/files/42263893597.pdfIn PDF document text
  • http://metalltechnik-kutschi.at/kuvezilituvifipe.pdfIn PDF document text
  • https://www.peltonfell.org.uk/ckfinder/userfiles/files/segukegevato.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=android+os+for+pc+64+bit+download+isoPDF 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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