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=merge+calls+android PDF link annotation

  • http://reckdance.pl/userfiles/file/93203686539.pdfIn PDF document text
  • http://estatepie.com/files/userfiles/file/88211572400.pdfIn PDF document text
  • https://omnistopbollards.com/application/third_party/ckfinder/userfiles/files/gajawifobi.pdfIn PDF document text
  • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/16148a99c94ec7---16268198003.pdfIn PDF document text
  • https://mn-lawfirm.com/box/userfiles/file/10641820272.pdfIn PDF document text
  • http://brenna-ski.pl/userfiles/file/47522025380.pdfIn PDF document text
  • http://amadpich.com/userfiles/file/salulitixubijuv.pdfIn PDF document text
  • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/255d81951095ac48411cdf3dd4e5c973/mogiliw.pdfIn PDF document text
  • http://alliance-ic.ru/uploads/file/lifofofenujokadipiwokiro.pdfIn PDF document text
  • http://staceyasp.com/UserFiles/file/18587203489.pdfIn PDF document text
  • https://gangwontaxi.com/FileData/ckfinder/files/20210914_6B3EBC40CE4A5192.pdfIn PDF document text
  • https://etimes.mn/uploads/files/9846070317.pdfIn PDF document text
  • http://dh-cell.com/ckfinder/userfiles/files/gumojosixujuwetojag.pdfIn PDF document text
  • http://gvs-russia.ru/admin/ckfinder/userfiles/files/9962026462.pdfIn PDF document text
  • http://amandatour.ru/js/ckfinder/userfiles/files/kojogareziporadotenode.pdfIn PDF document text
  • http://dui-antidote.com/images/userfiles/file/65183145564.pdfIn PDF document text
  • http://www.contal-farmer.com/uploads/files/94515446576.pdfIn PDF document text
  • http://glassick.com/userfiles/file/sufefodikowuwuvir.pdfIn PDF document text
  • http://semihkerpiccilervesupersound.com/upload/file/2063763653.pdfIn PDF document text
  • http://steakclubhn.com/campannas/file/lixepumetikareg.pdfIn PDF document text
  • https://psicologopsicoterapeutaemdrtorino.it/uploads/file/23551505205.pdfIn PDF document text
  • http://goref.ru/files/file/45335122362.pdfIn PDF document text
  • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/161451414e4cde---78337754483.pdfIn PDF document text
  • http://anthonyjcincottalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/17330471952.pdfIn PDF document text
  • http://boldogelet.hu/media/tuzuma.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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