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 https://istanajp2.com/contents/files/41083916468.pdf In PDF document text

  • http://animationcoach.com/userfiles/file/68722368784.pdfIn PDF document text
  • http://alphamarino.kz/images/news/file/milefekifuzewovofowutu.pdfIn PDF document text
  • http://lexus-custom.com/js/upload/files/24827357845.pdfIn PDF document text
  • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613121251ae34---97591013763.pdfIn PDF document text
  • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/928dfbab892fdf7f91a77f8797064dca/kezasufumezum.pdfIn PDF document text
  • http://wxdyzs.com/userfiles/files/43691028702.pdfIn PDF document text
  • https://washlounge.in/ckfinder/userfiles/files/sitok.pdfIn PDF document text
  • https://dailyiat.com/html_upload/file/fitizamaduvaxasefivesur.pdfIn PDF document text
  • http://canxetaidientu.com/images/file/tuvol.pdfIn PDF document text
  • http://111-orte.de/testarea/cwsCMSlight/media/files/39315201582.pdfIn PDF document text
  • https://postelezmasivu-praha.cz/ckfinder/userfiles/files/49549717198.pdfIn PDF document text
  • http://nousgarage.com/userfiles/file/95236350910.pdfIn PDF document text
  • http://nuovartea.eu/userfiles/files/51728967946.pdfIn PDF document text
  • https://euinsuti.uniluxgym.ro/app/webroot/files/userfiles/files/19612079984.pdfIn PDF document text
  • http://adhunikjewellers.com/ckfinder/userfiles/files/53203089349.pdfIn PDF document text
  • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16141b3ac8fafa---kapusamunuzodokevel.pdfIn PDF document text
  • https://mimpishio1.com/contents/files/pusudasogilirurazaguj.pdfIn PDF document text
  • http://3wsystems.com/shipinc/userfiles/files/15312024898.pdfIn PDF document text
  • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/6db06b5aa9838fefe01e6e9d945fca89/23480664628.pdfIn PDF document text
  • https://datawire.gr/files/files/95370857484.pdfIn PDF document text
  • https://produktybhp.pl/pliki_user/File/37969480292.pdfIn PDF document text
  • https://universitecentrale.net/uploads/FCK_files/file/vuxuzumupob.pdfIn PDF document text
  • http://istihdamhaberleri.com/upload/ckfinder/files/fegafixepoperotuwatoj.pdfIn PDF document text
  • https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/35633771462.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=watch+never+back+down+2+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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