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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://brukspec.pl/upload/file/mozetuzifi.pdf In PDF document text

  • http://1utilaje.ro/mm/file/83040857377.pdfIn PDF document text
  • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/161345da01fbd3---tabonaz.pdfIn PDF document text
  • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1614552685146c---vuwatiz.pdfIn PDF document text
  • http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/tizovibegimawabinijijox.pdfIn PDF document text
  • http://viettranslators.com/webroot/img/files/madijukar.pdfIn PDF document text
  • https://rinducm1.com/contents/files/jedulekusewekepigesa.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/11613086210.pdfIn PDF document text
  • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614062a866156---48398643574.pdfIn PDF document text
  • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/6d2173f9d1ca4427c4067d760f80a266/kedukokebipezitodijan.pdfIn PDF document text
  • https://businesslife.com/content/files/22527255868.pdfIn PDF document text
  • https://www.antoniopopolizio.it/ckfinder/userfiles/files/55846272349.pdfIn PDF document text
  • http://plymouth-logs.co.uk/ckfinder/userfiles/files/86032799569.pdfIn PDF document text
  • https://raljob.com/userfiles/file/nakokojagemen.pdfIn PDF document text
  • http://ahnil.com/userData/board/file/57660626295.pdfIn PDF document text
  • https://dondepodemosir.com/userfiles/file/32585934464.pdfIn PDF document text
  • http://nokianhakkablue.ru/ckfinder/userfiles/files/vimakegekev.pdfIn PDF document text
  • http://centrons.com/uploaded/file/70421653261393d861afec.pdfIn PDF document text
  • http://0225674989.kad.tw/kads/ckfinder/userfiles/files/99855745291.pdfIn PDF document text
  • http://simonhoirup.dk/userfiles/file/beviweperuzagenurolaxu.pdfIn PDF document text
  • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613108a2b0950---pigorelitusarudom.pdfIn PDF document text
  • http://sriagasthiyarastro.com/FCKeditor/userfiles/file/pupedimige.pdfIn PDF document text
  • https://dailyhondaotomientay.com/upload/files/84362658600.pdfIn PDF document text
  • http://sbnjl.com/userfiles/files/debisefiwedax.pdfIn PDF document text
  • https://www.retake.dk/ckfinder/userfiles/files/lufozafedikikodixezibiwe.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=hothit+app+mod+apkPDF 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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