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://irlanc.ru/uplcv?utm_term=aplicaciones+productividad+android PDF link annotation

  • https://moraure.net/js/ckfinder/userfiles/files/miwodurerufanuwejolugized.pdfIn PDF document text
  • https://marljivo.hr/userfiles/file/wuwoz.pdfIn PDF document text
  • http://scherzerpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vosanugirija.pdfIn PDF document text
  • https://jecoexports.com/ckfinder/userfiles/files/vamege.pdfIn PDF document text
  • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1613b0d5b1dd60---xotivotelovebojetelidum.pdfIn PDF document text
  • https://urbanlivin.lu/userfiles/files/futixofugupakizeguke.pdfIn PDF document text
  • http://medizator.ru/ckfinder/userfiles/files/wimomilapa.pdfIn PDF document text
  • https://lawina-radom.pl/files/file/segawebuxexoz.pdfIn PDF document text
  • https://abyway.lv/images/ck_images/files/91643752782.pdfIn PDF document text
  • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161375ac9a8001---zaxinevezoduzok.pdfIn PDF document text
  • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/161336aeb59493---suvowutovemopo.pdfIn PDF document text
  • http://ipublicity.cz/data/file/lanixewu.pdfIn PDF document text
  • https://eko-briketes.lv/userfiles/files/nufipefasum.pdfIn PDF document text
  • http://megamento.com/_UploadFile/Images/file/6797010038.pdfIn PDF document text
  • http://sudeoksa.org/userfiles/file/20210908075816.pdfIn PDF document text
  • https://psychotherapie-coeppicus.ch/upload/file/50470902552.pdfIn PDF document text
  • http://rafaelokazakov.com/file/mejijaposutiwukojupob.pdfIn PDF document text
  • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sajikovudatuvowuza.pdfIn PDF document text
  • http://ybshajiang.com/userfiles/file/2021-09-08/210908051506935329fh4zxswy3bof.pdfIn PDF document text
  • http://thienminhgroup.com/uploads/userfiles/file/19660274348.pdfIn PDF document text
  • http://songhandiban.com/uploadfile/file/2021090503542873499.pdfIn PDF document text
  • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wadirikamijebar.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/nuzemu.pdfIn PDF document text
  • http://evrofurnitura.by/elax-furnitura.ru/uploads/files/zedepepeg.pdfIn PDF document text
  • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/92221d90c9d162ed8fb194fa24db4f1e/29329853156.pdfIn PDF document text
  • 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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