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 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 https://inwebjor.ru/uplcv?utm_term=relative+clauses+exercises+with+answers+for+class+8 PDF link annotation

  • https://techinnsrl.com/writable/public/userfiles/file/bivexu.pdfIn PDF document text
  • http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/34077136040.pdfIn PDF document text
  • http://mutamobilya.com/images_upload/files/rusavigu.pdfIn PDF document text
  • https://campfun.myhost888.com/upload/ckeditor/files/12882544328.pdfIn PDF document text
  • https://truckforceone.eu/upload/editor/file/41118783394.pdfIn PDF document text
  • http://balaton.varosom.hu/userfiles/files/zebugivi.pdfIn PDF document text
  • http://risme.vn/files/julovalo.pdfIn PDF document text
  • http://cukiernia.eu/upload/files/9896064531.pdfIn PDF document text
  • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/noretobepumokaforumekepa.pdfIn PDF document text
  • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a7d43abfd8---15488557180.pdfIn PDF document text
  • https://nguyenvanhuongloc.vn/app/webroot/files/images/pages/files/kujofoferix.pdfIn PDF document text
  • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/790c52f935af571659d13ddb84d7068d/6806959772.pdfIn PDF document text
  • http://cu-hinothai.com/ckfinder/userfiles/files/42942013815.pdfIn PDF document text
  • http://datong-travel.tw/upload/ckeditor/files/20210913060118.pdfIn PDF document text
  • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613eba9bed214---47713737205.pdfIn PDF document text
  • https://vinaconexmec.vn/uploads/news_file/58780477581.pdfIn PDF document text
  • https://branchennachweis.eu/userfiles/file/fonivibugosokupebidupa.pdfIn PDF document text
  • http://telek-trans.hu/editor_up/23960324637.pdfIn PDF document text
  • http://tabbanbros.com/admin/fckeditor/editor/filemanager/connectors/upload/file/sileputabose.pdfIn PDF document text
  • https://bestofbucerias.com/upload/file/18465433486.pdfIn PDF document text
  • https://littleitalypizzany.com/nbloom/fckuploads/file/35732246727.pdfIn PDF document text
  • http://www.startbatteries.gr/ckeditor/ckfinder/userfiles/files/36366561159.pdfIn PDF document text
  • https://uleshuzatabc.hu/files/file/nalawisiva.pdfIn PDF document text
  • http://akcompany.vn/uploads/userfiles/file/vinonasuderategovezipoja.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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