Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://pistant.ru/uplcv?utm_term=mcq+our+environment+class+10 PDF link annotation

  • http://bndweb.nl/upload/files/48821781477.pdfIn PDF document text
  • http://srsheicha.com/uploadfile/file/30931921995.pdfIn PDF document text
  • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/94771423276.pdfIn PDF document text
  • http://wienbildarchiv.com/upload_files/files/90264743402.pdfIn PDF document text
  • https://www.notusweb.com.br/ckeditor/ckfinder/userfiles/files/toforefujisenefevuwa.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/0ugaoqp1rvmav7sguo15f1tdl1/gumasagemuvul.pdfIn PDF document text
  • http://kingtonkatsu.com/uploads/files/xuvokonuzukaxeviva.pdfIn PDF document text
  • http://skogsformedling.se/bilder_umeny/File/lugogujoxebozopemawarula.pdfIn PDF document text
  • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160adf1ea7e203---72504577275.pdfIn PDF document text
  • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/wefirazejabiv.pdfIn PDF document text
  • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c3f962405fe---49277010603.pdfIn PDF document text
  • http://poiskvod.ru/images/file/56173740065.pdfIn PDF document text
  • http://www.sport-konyv.hu/userfiles/file/40626063394.pdfIn PDF document text
  • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160748ca6dde61---fegawu.pdfIn PDF document text
  • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1611f7c799f940---80684653648.pdfIn PDF document text
  • https://hgb.se/filer/file/40855766305.pdfIn PDF document text
  • http://myphammonly.com/luutru/files/42098124425.pdfIn PDF document text
  • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607202f420bef---duxar.pdfIn PDF document text
  • http://driver-jazda.pl/upload/file/48242124266.pdfIn PDF document text
  • http://autosvilar.com/uploads/ckfinder/files/98737097755.pdfIn PDF document text
  • https://bitree.ru/ckfinder/userfiles/files/kajizomimabixolomema.pdfIn PDF document text
  • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160872ec243bd2---zivorimijavibov.pdfIn PDF document text
  • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16070a7ee54670---vuzimewuragawimuf.pdfIn PDF document text
  • http://xboxheerlen.nl/userfiles/file/15718624199.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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