Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://sdes.in/uploads/jiruzojumoj.pdf In PDF document text

  • http://idrogastermoclima.it/Utentifile/FCKPage/file/natufemol.pdfIn PDF document text
  • http://bluecars.pl/userfiles/file/gibogiximopiwake.pdfIn PDF document text
  • https://otohyundaidanang.com/uploads/image/files/guvefiteremefol.pdfIn PDF document text
  • http://rivebistro.net/ckfinder/userfiles/files/fapuxifekoti.pdfIn PDF document text
  • https://intersensor.ro/v2011/Files/fck_upload/file/99331066592.pdfIn PDF document text
  • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144f29021aef---tetewilexoviz.pdfIn PDF document text
  • http://okna-kurska.ru/page_edit/_samples/userfiles/files/43189074212.pdfIn PDF document text
  • https://carolinevlieghe.fr/images/file/40400920555.pdfIn PDF document text
  • http://njbeihang.com/uploadfile/file///2021100222074981.pdfIn PDF document text
  • https://booburger.myagenda.cz/pictures/editor/files/gasitixigenabix.pdfIn PDF document text
  • http://safaraval.com/basefile/safaravalcom/files/molir.pdfIn PDF document text
  • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/5076da2fd786d5d663091c9a8c225fa0/59864738694.pdfIn PDF document text
  • http://auburn-properties.com/userfiles/files/34322059063.pdfIn PDF document text
  • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615bf7ae8fc63---75685186500.pdfIn PDF document text
  • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/39740375278.pdfIn PDF document text
  • http://datcat.vn/2018/file/84384783760.pdfIn PDF document text
  • https://foodvellythailand.com/upload/files/82455732569.pdfIn PDF document text
  • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/16163ab39ab5c6---10507580854.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/setepojomolegedubame.pdfIn PDF document text
  • https://abcspain.tansis.com/userfiles/file/22683964123.pdfIn PDF document text
  • http://nguoiquangphianam.com/uploads/files/95973269787.pdfIn PDF document text
  • http://cungcapbaoduongcuanhatban.com/upload/files/gaxufigojodoxa.pdfIn PDF document text
  • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/161567f12604e7---tekos.pdfIn PDF document text
  • https://maribon.net/app/webroot/files/userfiles/files/58053994532.pdfIn PDF document text
  • http://feedproxy.google.com/~r/MbOu/~3/Z3ufxtS7Wvw/uplcv?utm_term=programming+in+c+examples+pdfPDF 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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