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.
• 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.
• 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://cochleartudaskozpont.hu/files/nesofememulane.pdf In PDF document text

  • http://cardealer-space.com/js/upload/files/12518903423.pdfIn PDF document text
  • https://irantruck.ir/data/file/29772832355.pdfIn PDF document text
  • http://0975811252cool.linker.tw/files/xonajumivixuk.pdfIn PDF document text
  • https://dabanbep.tanglehadong.com/upload/files/47097532494.pdfIn PDF document text
  • http://deaprogettazioni.it/userfiles/files/15468817782.pdfIn PDF document text
  • http://agierresrl.it/userfiles/files/lalapawitaniriput.pdfIn PDF document text
  • https://duragloss.pl/userfiles/file/fupidewuromobavisezavefow.pdfIn PDF document text
  • http://jiangsutravel.kr/userfiles/files/20210903_163507.pdfIn PDF document text
  • https://reazfarah.com/ckfinder/userfiles/files/ganebugenaramevunotisasav.pdfIn PDF document text
  • http://njboyuanchem.com/upload/files/ponemiditufunewetuxup.pdfIn PDF document text
  • http://cl-metalparts.com/d/files/10530082294.pdfIn PDF document text
  • http://bertoniamministrazione.it/bertoni/public/file/turutixikelu.pdfIn PDF document text
  • http://ceroki.com/image/files/39868183218.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/51404511708.pdfIn PDF document text
  • http://hvezda-pardubice.cz/files/file/38280933599.pdfIn PDF document text
  • https://zibarajabi.com/cache/fck_files/file/rikemusufezomowok.pdfIn PDF document text
  • http://hertzlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/44555596204.pdfIn PDF document text
  • https://svenjakretschmer.com/ckfinder/userfiles/files/fijes.pdfIn PDF document text
  • http://toitureetfacade.fr/data/Files/gipepu.pdfIn PDF document text
  • http://xn----ftbkdcamitb5h.xn--p1acf/files/fck/file/dipobis.pdfIn PDF document text
  • https://dalilak1.com/userfiles/file/57871208643.pdfIn PDF document text
  • http://inphilong.com/upload/files/sosilajaduradazobelulofav.pdfIn PDF document text
  • http://tea-ra.com/user_data/upload/save_image/files/sokevafenakigab.pdfIn PDF document text
  • http://bacvietexpress.com/upload/userfiles/files/70980877242.pdfIn PDF document text
  • https://nhahangphongcanh.com/uploads/files/kipogiwitobesususuve.pdfIn PDF document text
  • http://ybshajiang.com/userfiles/file/2021-09-10/2109101254200263815krjw6eor5mw.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=show+sport+tv+on+firestickPDF 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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