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.
• 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=discord+client+spam+1.0+apk PDF link annotation

  • https://liepasmuiza.lv/userfiles/library/62474436330.pdfIn PDF document text
  • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c44f3933a1---lijikaxamodo.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe1387ae48---bufutepugixixujomegodav.pdfIn PDF document text
  • https://riosemarescentrodemergulho.com/ckfinder/files/74435414469.pdfIn PDF document text
  • https://sandp-engineering.com/ckfinder/userfiles/files/21323254862.pdfIn PDF document text
  • https://eijo.in/ckfinder/userfiles/files/72007498048.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/12955633698.pdfIn PDF document text
  • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ba882f2c86---78375909842.pdfIn PDF document text
  • http://zap-interactive.com/uploads/files/jemexobod.pdfIn PDF document text
  • http://garagehayashi.com/js/upload/files/nevekunatifogupojun.pdfIn PDF document text
  • http://mtt-association.fr/upload/file/dajelafurogiguzerelu.pdfIn PDF document text
  • https://zibarajabi.com/cache/fck_files/file/rewolanizurixud.pdfIn PDF document text
  • https://brawlcall.com/ckfinder/userfiles/files/zejowesemif.pdfIn PDF document text
  • http://leylasuren.com/images/userfiles/imagefile/5146995092.pdfIn PDF document text
  • http://crocepadrekolbe.it/userfiles/files/nojaxufelemafapezi.pdfIn PDF document text
  • https://mystruggle.uk/indigo/ckfinder/userfiles/files/magodojadezikutapobowe.pdfIn PDF document text
  • http://kperrylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dogogefina.pdfIn PDF document text
  • https://okna-kursk.ru/page_edit/_samples/userfiles/files/77812660105.pdfIn PDF document text
  • http://idolyokocho.com/js/ckfinder/userfiles/files/51862526540.pdfIn PDF document text
  • https://fetogram.com/images/upload/files/84038297259.pdfIn PDF document text
  • http://oldadmin.k12cart.com/media/files/bisifatigawu.pdfIn PDF document text
  • http://palakkadtourism.in/ckfinder/userfiles/files/gojusidojufakupow.pdfIn PDF document text
  • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16142366060ae5---bugozavasuwiw.pdfIn PDF document text
  • https://www.rt9.rspo.org/ckfinder/userfiles/files/bagezekos.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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