Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://catamma.ru/uplcv?utm_term=%D9%85%D9%84%D8%AE%D8%B5+%D8%BA%D8%B2%D9%88%D8%A9+%D8%A8%D8%AF%D8%B1+pdf PDF link annotation

  • http://gelateriacool.it/userfiles/files/zobexefaluxari.pdfIn PDF document text
  • http://faradtvandor.hu/picture/userfiles/file/8545697585.pdfIn PDF document text
  • https://www.nexidia.it/wp-content/plugins/super-forms/uploads/php/files/48c7f1236a5ca76f57739df915896a29/16854495529.pdfIn PDF document text
  • http://damnoen.com/ckfinder/pho/files/93827194586.pdfIn PDF document text
  • http://acecaalcoy.com/userfiles/file/faforizelokijagifam.pdfIn PDF document text
  • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/tufuluvo.pdfIn PDF document text
  • http://robertfeinberglaw.com/images/edit_images/file/novudew.pdfIn PDF document text
  • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/fa5573e4d6cf0f6c66d45d83d2c2d192/57526029485.pdfIn PDF document text
  • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160fa281d86ce1---rapawipepurovozo.pdfIn PDF document text
  • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/589ef732a4497ea561779d384cce3c08/gitegugikaba.pdfIn PDF document text
  • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608916b378649---26409305627.pdfIn PDF document text
  • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c29677a0b48---25088442842.pdfIn PDF document text
  • https://torbay.ru/images/uploads/file/56585786700.pdfIn PDF document text
  • http://ktcz.eu/files/files/45936528204.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/71800433527.pdfIn PDF document text
  • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160e7a097905b9---42332955355.pdfIn PDF document text
  • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/87073f7bedba913128b992e4fa33e73e/88262702901.pdfIn PDF document text
  • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afb34a93534---76095806060.pdfIn PDF document text
  • https://palcev.ru/userfiles/file/57699599224.pdfIn PDF document text
  • http://bookblog.kr/data/file//files/54670921224.pdfIn PDF document text
  • http://studiovalentini.eu/userfiles/files/jojol.pdfIn PDF document text
  • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160dcb4d831447---penuvexemuridureku.pdfIn PDF document text
  • https://bandotrading.com/uploads/file/jineze.pdfIn PDF document text
  • https://stiff.pl/ckfinder/userfiles/files/94700815114.pdfIn PDF document text
  • https://matfreklam.com/calisma2/files/uploads/tutojalerenateralen.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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