Malicious PDF — malware analysis report

Heuristics 9

• 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.
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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 http://zzfcw.com/file/fkimg/file/68662912682.pdf In PDF document text

  • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137e193a0bf3---takudagejalawotux.pdfIn PDF document text
  • http://chuabenhxuongkhop24h.com/images/files/21452838306.pdfIn PDF document text
  • https://uangraja.com/contents/files/rigajobo.pdfIn PDF document text
  • http://ramseier-appenzell.ch/elrada/js/ckfinder/userfiles/files/66562084646.pdfIn PDF document text
  • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161455035df4da---tapikovekajebatoloxedeper.pdfIn PDF document text
  • https://trinityautorepairs.com/uploads/files/33033523044.pdfIn PDF document text
  • http://rebeccafantarchitetto.it/userfiles/files/79455128694.pdfIn PDF document text
  • http://restauraceeverest.cz/userfiles/file/72573664062.pdfIn PDF document text
  • http://nwatchonline.org/userfiles/file/wudokadigege.pdfIn PDF document text
  • http://thuocamakong.net/userfiles/image/file/16897991084.pdfIn PDF document text
  • http://toanthinh.vn/webroot/img/files/zoboxigigobagoti.pdfIn PDF document text
  • https://www.wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/80246312264.pdfIn PDF document text
  • http://cisseo.net/userfiles/files/50765763633.pdfIn PDF document text
  • http://drapa-technika.cz/UserFiles/File/30215487022.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/rudodixuberogakupowivuz.pdfIn PDF document text
  • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/3e7b2b54db2782951561a1a836b02739/gesatukezababujidumomudep.pdfIn PDF document text
  • https://ochronaskory.pl/pliki_user/File/tebonujirunapivirifatut.pdfIn PDF document text
  • http://budoprojekt.eu/obrazy/file/48527588393.pdfIn PDF document text
  • http://pereplanirovkaoblast.ru/pict/file/sifonobexuwelezunizuwupi.pdfIn PDF document text
  • http://rootbeadmill.com/upload_fck/file/2021-9-10/20210910204309803364.pdfIn PDF document text
  • https://rubfila.in/files/file/vulitoxip.pdfIn PDF document text
  • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/f8463203c02396c2a7350a4727df89fa/6813106225.pdfIn PDF document text
  • https://www.mmgrowersg.com/ckfinder/userfiles/files/rutirenige.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=gta+san+andreas+app+and+file+downloadPDF link annotation
  • 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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