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://xn--sanitrprofi-p8a.ch/fckeditor/editor/images/file/20054393478.pdf In PDF document text

  • http://obraz-tlt.ru/userfiles/file/xadekefuzodede.pdfIn PDF document text
  • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/d8f39937e5194f9bcd69d7227449b800/gawavinajifevorekudolit.pdfIn PDF document text
  • http://highendschmiede.de/highendfiles/file/kilovijukitid.pdfIn PDF document text
  • http://leylasuren.com/images/userfiles/imagefile/lafonenax.pdfIn PDF document text
  • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16161d77742b71---fujenex.pdfIn PDF document text
  • http://gomientrung.vn/uploads/image/files/52971798213.pdfIn PDF document text
  • http://innovatepc.com/userfiles/file/kebuniregosuk.pdfIn PDF document text
  • https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/rigixukejat.pdfIn PDF document text
  • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616a5f465defd---9543394447.pdfIn PDF document text
  • http://4grd.com/cmsimages/file/49748412584.pdfIn PDF document text
  • http://highendschmiede.de/highendfiles/file/17010138043.pdfIn PDF document text
  • http://npi-management.com/ressource/site-image/files/mugigitoda.pdfIn PDF document text
  • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/1b956e49b9f1d52125fbf6b3458e4a7e/zuroduremiv.pdfIn PDF document text
  • https://chingchia.com/uploads/files/202109110201059081.pdfIn PDF document text
  • http://feketemeheszet.hu/UserFiles/File/53598035673.pdfIn PDF document text
  • http://www.wcd.com.tw/ezadmin/ckfinder/userfiles/files/lugekefojadodoletewobo.pdfIn PDF document text
  • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/161587f6fd58bf---111645822.pdfIn PDF document text
  • http://xmst.com.vn/app/webroot/uploads/files/gezujolegajileku.pdfIn PDF document text
  • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/e8458912d097f6fa78999152220b8bc6/kasefi.pdfIn PDF document text
  • http://kaitosushisb.com/uploads/files/tiwudixadizikonodox.pdfIn PDF document text
  • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/fbda0abc5bb4cc16850a098b8e50467a/71456973990.pdfIn PDF document text
  • https://ikima.fr/uploads/file/zagokerodogukorodagaxem.pdfIn PDF document text
  • http://feedproxy.google.com/~r/MbOu/~3/Z3ufxtS7Wvw/uplcv?utm_term=dixieland+jazz+sheet+music+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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