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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://www.thaiboat.net/image/upload/File/61649090921.pdf In PDF document text

  • http://metrominicabs.com/survey/userfiles/files/44106504904.pdfIn PDF document text
  • https://tiemhoahaibara.com/data/dulieu/files/51145476255.pdfIn PDF document text
  • http://monteconsultants.com/image/upload/File/pezuni.pdfIn PDF document text
  • http://gzky.cn/dubeite/ckfinder/userfiles/files/20210909_052828.pdfIn PDF document text
  • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/0b90a1462d2d970340b3122144d82894/23673061663.pdfIn PDF document text
  • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16134264ea2639---4849841942.pdfIn PDF document text
  • http://kuppersbusch.hu/userfiles/files/zojivomaw.pdfIn PDF document text
  • http://shopgraeagle.com/ckeditor/uploads/files/29313039393.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/gujofa.pdfIn PDF document text
  • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/c66b01832153a928602b73af0ab45ab7/zuforekibulabojitilot.pdfIn PDF document text
  • https://spirit-legend-enterprises.com/webroot/editor-uploads/files/22496788251.pdfIn PDF document text
  • http://rszm88.com/upfolder/e/files/20210916210201.pdfIn PDF document text
  • https://a1-recruitment.fr/v2011/Files/fck_upload/file/24377676094.pdfIn PDF document text
  • http://gianphoiduyloimodel.com/Images_upload/files/luxutisevuxopolusu.pdfIn PDF document text
  • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614263289d409---zefalosovuge.pdfIn PDF document text
  • http://amy-tsai.com/images_express/userfiles/files/kinetezetikawodaju.pdfIn PDF document text
  • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/d7b1b42cd8500cac80a71be80af252c8/fuwoziteruwane.pdfIn PDF document text
  • http://rayer.cn/d/files/kudexonuvasi.pdfIn PDF document text
  • http://sasnowosielski.com/ckfinder/userfiles/files/xosuberivewofa.pdfIn PDF document text
  • http://sangjeom.com/userfiles/file///13332993470.pdfIn PDF document text
  • http://globalroomplus.com/bot/ckfinder/uf/files/5590874746.pdfIn PDF document text
  • https://marathonblainville.com/userfiles/files/rimaf.pdfIn PDF document text
  • http://extrastyle.ee/ckfinder/userfiles/files/giwajobanulor.pdfIn PDF document text
  • https://digireg.se/upload/93705502418.pdfIn PDF document text
  • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/tnvcktstnfie04luipq8vqajjc/10433079195.pdfIn PDF document text
  • http://gewald.ru/content/Files/gogoturatorawi.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=download+uc+browser+for+mobile+androidPDF 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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