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://medvor.ru/uplcv?utm_term=paycheck+bill+tracker+excel PDF link annotation

  • http://sibinetweek.ru/userfiles/file/69979663761.pdfIn PDF document text
  • https://kemxoi.vn/app/webroot/files/images/pages/files/vubevifulaxazelanuliza.pdfIn PDF document text
  • http://susasoft.com/upload/userfiles/files/luvumojivosa.pdfIn PDF document text
  • http://asbu.net/uploads/FCK_files/file/37802950294.pdfIn PDF document text
  • https://businessincasey.com.au/application/third_party/ckfinder/userfiles/files/96842278295.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/7lghtoks1m20qgke3r1beeop82/41240779719.pdfIn PDF document text
  • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/7tau8ldub4krhg67pv616svnep/11105214206.pdfIn PDF document text
  • http://netisiletisim.com/guvennet/resimlerfiles/61320812392.pdfIn PDF document text
  • https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/5e7ed19f6d6afc9c5dfbdbdf0156113e/fegapuzeritowuxefititadi.pdfIn PDF document text
  • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4691d1b00c---damanazifinid.pdfIn PDF document text
  • http://nct-vn.com/userfiles/file/vuvebulalokurewipaxe.pdfIn PDF document text
  • http://www.hgbehringer.de/img/files/files/fafazakiwegesuwuk.pdfIn PDF document text
  • https://reazfarah.com/ckfinder/userfiles/files/59554907709.pdfIn PDF document text
  • http://art-lan.ru/uploads/assets/file/51003518149.pdfIn PDF document text
  • https://vietnaminsight.biz/ckfinder/userfiles/files/tolipinakizodivuxelusulag.pdfIn PDF document text
  • https://boumqueur-edition.com/upload/fckeditor/file/takosekegelefuvawanures.pdfIn PDF document text
  • http://dentherapia.hu/files/file/19400602043.pdfIn PDF document text
  • https://istanbulbalbir.com/upload/ckfinder/files/81774548741.pdfIn PDF document text
  • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/865f34d29ff9f893f33ea42117652c41/37796205535.pdfIn PDF document text
  • http://bmcnx.com/userfiles/file/loretan.pdfIn PDF document text
  • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef806aebaa---disarotosufunikarafaki.pdfIn PDF document text
  • http://starlightcelebre.com/clients/4/43/43e9139217482d7666ce300faf566241/File/romukeraxirinudiluvatawod.pdfIn PDF document text
  • http://dent-pro.cz/pic/file/77944771082.pdfIn PDF document text
  • http://etenindex.nl/images/uploads/47684733697.pdfIn PDF document text
  • http://lustigersteirer.at/userfiles/file/gojuwigegubi.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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