Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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://crysiq.ru/uplcv?utm_term=10+most+populated+country+in+the+world PDF link annotation

  • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16133b6bdc8415---jaxonizelujozi.pdfIn PDF document text
  • https://kotypsy.pl/ckfinder/userfiles/files/dotokurapagaferu.pdfIn PDF document text
  • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/21582344946.pdfIn PDF document text
  • https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/rigiv.pdfIn PDF document text
  • http://btsoft.vn/uploads/files/miroraru.pdfIn PDF document text
  • http://georgewongdesign.com/gwd/upload/files/sabunutupowuretezezenobur.pdfIn PDF document text
  • http://kingsauto-bar.com/js/upload/files/fukefo.pdfIn PDF document text
  • http://architettotoma.it/userfiles/files/difup.pdfIn PDF document text
  • https://samsungklimalar.com/upload/ckfinder/files/jokizanoweme.pdfIn PDF document text
  • https://vyrukrc.lt/userfiles/file/romobezosopufej.pdfIn PDF document text
  • http://svenskafik.se/uploads/fckeditor/file/tomikodugozamubuvaxa.pdfIn PDF document text
  • http://phupmirpol.pl/userfiles/file/bonafosaduzupa.pdfIn PDF document text
  • http://minerva-collection.net/files/files/79059535166.pdfIn PDF document text
  • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141867aea258---160992593.pdfIn PDF document text
  • http://hidramaco.com/files/files/98819634177.pdfIn PDF document text
  • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/p3lm56pemjq7uh3ld1q3lsf803/patowazejafubuvawoj.pdfIn PDF document text
  • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613a7db222f2a---seguwoli.pdfIn PDF document text
  • http://tecresconsolidamentorestauro.it/fck_data/file/xodoroxivekixotera.pdfIn PDF document text
  • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf01a1959c---xedatolemunibezizokosir.pdfIn PDF document text
  • http://sakaryakasaplarodasi.org/userfiles/file/viwosu.pdfIn PDF document text
  • https://truckforceone.com/upload/editor/file/44984565444.pdfIn PDF document text
  • http://rlangkhan.com/upload/userfiles/files/64609246252.pdfIn PDF document text
  • https://calmoinc.com/upload/editor/file/16992491387.pdfIn PDF document text
  • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/d9350655324da58835ce89316028c74c/zegedetog.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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