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://archism.ru/uplcv?utm_term=libro+gratis+las+cinco+heridas+que+impiden+ser+uno+mismo+pdf PDF link annotation

  • http://www.verneteco.com/ckfinder/userfiles/files/55341968976.pdfIn PDF document text
  • https://mokhalasati.com/userfiles/files/53830798653.pdfIn PDF document text
  • http://hzxf.com/images/upload/File/99223322704.pdfIn PDF document text
  • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b61a271793---91943034728.pdfIn PDF document text
  • http://telecycling.info/files/file/73818428185.pdfIn PDF document text
  • https://hoongnau.com/upload/files/44253174906.pdfIn PDF document text
  • http://nguoigiupviec99.com/webroot/img/files/dosenaxirosasepenanepuj.pdfIn PDF document text
  • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613aff949d311---89593535187.pdfIn PDF document text
  • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139f7802cd4b---37439825666.pdfIn PDF document text
  • https://ispartaprefabrik.com/ckfinder/upload/files/guzogilenixo.pdfIn PDF document text
  • http://tichdiem.surecare.vn/uploads/userfiles/file/92773188499.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/3ov47pkv65ecvfup519asi2r91/5107149746.pdfIn PDF document text
  • http://hiace-yoshikawa.com/js/upload/files/836762905.pdfIn PDF document text
  • http://taketty.xyz/js/ckfinder/userfiles/files/74553524349.pdfIn PDF document text
  • http://alpha-th.com/userfiles/file/lekotukirugamunariwudape.pdfIn PDF document text
  • https://highrise.pl/file/tilofusuxisadojovafomumon.pdfIn PDF document text
  • http://www.fashiongale.ro/userfiles/files/86324623423.pdfIn PDF document text
  • http://nanoservice.cz/upload/file/63281311789.pdfIn PDF document text
  • http://blackivy.pl/userfiles/file/maretamo.pdfIn PDF document text
  • http://savvyais.com/userfiles/file/piwepil.pdfIn PDF document text
  • https://mackbeks.com/files/file/34410691267.pdfIn PDF document text
  • https://turbooto.vn/upload/files/88369070947.pdfIn PDF document text
  • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/29bc47bca47c8e08a96b0d8d54707daf/87130106328.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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