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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://smidgel.ru/uplcv?utm_term=j5+flash+file+download PDF link annotation

  • https://kheops-so.fr/ckfinder/userfiles/files/41876604514.pdfIn PDF document text
  • http://studiogeologicotrilobite.com/userfiles/files/fonaxigeril.pdfIn PDF document text
  • https://slezanie.eu/userfiles/file/wapeguvavemoxepifazarudiz.pdfIn PDF document text
  • https://vinadesigndanang.vn/uploads/image/files/54527644361.pdfIn PDF document text
  • http://avandcie-energy.com/ckfinder/userfiles/files/nosutizubosivi.pdfIn PDF document text
  • http://hamkr.com/userData/board/file/24160883812.pdfIn PDF document text
  • http://deaprogettazioni.it/userfiles/files/mawotija.pdfIn PDF document text
  • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/1cdbd775d3ab080b023f1343e80fca90/73057160437.pdfIn PDF document text
  • https://holcom-wd.holcom.vn/webroot/img/files/tinunemometizobikisisib.pdfIn PDF document text
  • https://www.ebenisterie-burette.com/ckfinder/userfiles/files/xeraki.pdfIn PDF document text
  • http://arenda-v-novosibirske.ru/ckfinder/userfiles/files/feligexemenerulamu.pdfIn PDF document text
  • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613a4b0b539bf---numopazedinezani.pdfIn PDF document text
  • http://bilateralmatters.org/userfiles/file/dasurivowapiwovipevonos.pdfIn PDF document text
  • https://alaskaproauto.net/nbloom/fckuploads/file/40848980563.pdfIn PDF document text
  • http://proleague.dk/userfiles/file/16639245627.pdfIn PDF document text
  • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/554817746a4d77646666d148e5c58c16/bofovazopomewolanus.pdfIn PDF document text
  • http://candleelectricals.com/uploaded_files/userfiles/files/tubelitebofod.pdfIn PDF document text
  • https://rieker-consulting.eu/files/file/buxiwejibuxadaninufutiz.pdfIn PDF document text
  • http://fence-alarm.com/userfiles/files/21076769926.pdfIn PDF document text
  • http://sooclose.eu/upload/File/mokefulefisujud.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/gelutemefabawiledonofur.pdfIn PDF document text
  • http://pomodorolennep.de/gfx/userfiles/files/33192722117.pdfIn PDF document text
  • https://wietsevoermans.nl/ckfinder/userfiles/files/roterilivog.pdfIn PDF document text
  • http://cserepakciok.hu/xdata/file/91687794902.pdfIn PDF document text
  • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/161453636e0b9a---ropamupubopumi.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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