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.
• 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://wastran.ru/uplcv?utm_term=poker+mod+apk+2020 PDF link annotation

  • http://acudrved.com/ckfinder/userfiles/files/17815252200.pdfIn PDF document text
  • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/16132f8365dbb6---87425265656.pdfIn PDF document text
  • http://files.ibiza-ferien.de/file/lasipa.pdfIn PDF document text
  • http://hantechwelding.com/userfiles/file/2021090419284873499.pdfIn PDF document text
  • http://www.jacenter.org/js/ckfinder/userfiles/files/bupadoretuku.pdfIn PDF document text
  • http://liebherr-tr.com/userfiles/file/zujewixijigezoz.pdfIn PDF document text
  • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/81643193882.pdfIn PDF document text
  • https://cualuoihoanmy.com/uploads/userfiles/file/rijekotaj.pdfIn PDF document text
  • http://miwon.com.vn/app/webroot/uploads/files/rigotasidaruro.pdfIn PDF document text
  • http://arisutour.com/ckupload/files/36912834542.pdfIn PDF document text
  • http://ecole.ru/text/images/file/67098931837.pdfIn PDF document text
  • http://zulassung4you.de/bilder/file/govesalaniw.pdfIn PDF document text
  • http://onlinetalk.jp/app/webroot/img/fckfiles/file/34413185998.pdfIn PDF document text
  • http://wieswioska.pl/userfiles/file/48623293459.pdfIn PDF document text
  • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/5m82lo1qmgm9clvmen2s871610/46730861695.pdfIn PDF document text
  • https://atasuorganiktarim.com/upload/ckfinder/files/pipulabatarajo.pdfIn PDF document text
  • http://szintai.hu/ckfinder/userfiles/files/duvavazepabijumake.pdfIn PDF document text
  • https://tktravelkorea.com/FileData/ckfinder/files/20210909_DCD7819117C49E3A.pdfIn PDF document text
  • http://studiotecnicofrisoli.com/userfiles/files/27974663456.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/suval.pdfIn PDF document text
  • http://parquet-cortes.fr/data/Files/64124259675.pdfIn PDF document text
  • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613c47d028e1b---65076306091.pdfIn PDF document text
  • https://zaindu.drogomedia.com/files/galeria/files/17971596456.pdfIn PDF document text
  • http://clubsahdianagalati.ro/upload/editor/file/jifodimab.pdfIn PDF document text
  • http://cluster006.ovh.net/~greeters/namur/ckfinder/userfiles/files/movitopap.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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