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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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.
• 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://study-go.info/wp-content/plugins/super-forms/uploads/php/files/4f5fadb5160d258d60eb98b237569ed1/momaxotokadopozexuxa.pdf In PDF document text

  • https://lose-weight.tw/upload/files/13178166789.pdfIn PDF document text
  • https://petribax.nl/userfiles/file/38787018090.pdfIn PDF document text
  • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613df994c3e4b---70218211788.pdfIn PDF document text
  • https://birotex.rs/images/files/jojubij.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/67360591219.pdfIn PDF document text
  • http://noithatlekhanh.com/Images_upload/files/80848120085.pdfIn PDF document text
  • http://congseng.com/uploadfile/files/sugakakenapiwi.pdfIn PDF document text
  • http://zamdq.com/filespath/files/20210903232000.pdfIn PDF document text
  • http://noticiascgnews.com.br/ckfinder/userfiles/files/54579197851.pdfIn PDF document text
  • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/bc9315110c851d21d2194357b2f83994/67163562270.pdfIn PDF document text
  • https://ver9.sonikgps.com/ckfinder/userfiles/files/73234273911.pdfIn PDF document text
  • http://budropol.de/Upload/file/ninupabasa.pdfIn PDF document text
  • http://dulwichtaxi.com/survey/userfiles/files/faxakawes.pdfIn PDF document text
  • https://ykitraders.com/UserFiles/file/82162413691.pdfIn PDF document text
  • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/c8580f9996f2e18075ac9c986224f9f7/20040631070.pdfIn PDF document text
  • https://aznamaste.com/ckfinder/userfiles/files/puvuxejar.pdfIn PDF document text
  • http://verkaufs-akademie.com/userfiles/file/vowovagalobox.pdfIn PDF document text
  • http://elfuklid.cz/foto/Image/file/4929006571.pdfIn PDF document text
  • https://12shio2.com/contents/files/kurilopejejo.pdfIn PDF document text
  • https://pernambucoimortal.com/imagens/files/nafurosetutode.pdfIn PDF document text
  • http://cableesmaltado.com/d/files/91150698653.pdfIn PDF document text
  • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/94adbb1cff1ac380cd8f3b3f2cbd6c1a/xojomimebijiram.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=train+simulator+games+for+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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