Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• MFA / one-time-code harvesting lure high SE_MFA_LURE
  Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
• 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://pistant.ru/uplcv?utm_term=android+tutorials+new+boston PDF link annotation

  • http://zpkprzemysl.pl/ckfinder/userfiles/files/61713848451.pdfIn PDF document text
  • http://dfwarbitrator.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/43378879486.pdfIn PDF document text
  • http://yalcinsezer.com/upload/ckfinder/files/46185333810.pdfIn PDF document text
  • https://blokhol.com/upload/files/kanis.pdfIn PDF document text
  • http://ideviceplus.be/app/webroot/files/userfiles/files/45302298318.pdfIn PDF document text
  • https://kujainspectors.com/candyticket/uploads/page_images/files/zulirotujevuj.pdfIn PDF document text
  • http://salkim.com/userfiles/file/natojuxukefunababojibot.pdfIn PDF document text
  • https://bookmyexcellence.com/bookmyexcellence/js/ckfinder/userfiles/files/pogode.pdfIn PDF document text
  • http://cuadepthanglong.com/images/ckeditor/files/gevudodazibadezulobixux.pdfIn PDF document text
  • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135a3df3288f---117755323.pdfIn PDF document text
  • http://biogenetec.tw/image/files/20210902_012335.pdfIn PDF document text
  • https://indianhairtransplant.com/ckfinder/userfiles/files/jusagusosimasimalobaves.pdfIn PDF document text
  • https://siliconautomation.com/userfiles/file/xitadefuwivaruzujibon.pdfIn PDF document text
  • http://studiocinti.eu/userfiles/files/xigolazakox.pdfIn PDF document text
  • http://lnshiyue.com/userfiles/file/20210906053315_1781093139.pdfIn PDF document text
  • https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/44013848497.pdfIn PDF document text
  • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/87f879c8e828b21fb89a4b913aee2ad9/54274512430.pdfIn PDF document text
  • http://anabakorea.jp/userfiles/file/98423532215.pdfIn PDF document text
  • https://dailyiat.com/html_upload/file/74310695451.pdfIn PDF document text
  • http://35ct1.com/images/ckImageFiles/files/xaxevijusomosevetata.pdfIn PDF document text
  • http://footstepfloor.com/upfiles/files/bipafenasizugavugudukoju.pdfIn PDF document text
  • http://srtprogetti.eu/userfiles/files/51979025804.pdfIn PDF document text
  • http://reyazahmad.bscsaoner.in/ckfinder/userfiles/files/zibafamamuraguvolo.pdfIn PDF document text
  • http://ngocphuocjsc.com/public/default/ckeditor/files/kavofutafujebof.pdfIn PDF document text
  • http://hkalc.com/userfiles/56685318946.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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