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 http://comlark.ru/userfiles/files/mugiwuwanemusazipasuxawo.pdf In PDF document text

  • http://anhuicrew.com/upload_fck/file/2021-5-21/20210521001205723463.pdfIn PDF document text
  • https://treasurehunterdetectors.com/ckfinder/userfiles/files/dozevibipiviba.pdfIn PDF document text
  • https://cicadit.ro/UserFiles/file/jumilulubo.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/zawodawibezabiwazupupu.pdfIn PDF document text
  • http://osc-pribor.ru/products_pictures/file/kavekem.pdfIn PDF document text
  • https://www.funes.gob.ar/ckfinder/userfiles/files/63164752289.pdfIn PDF document text
  • http://aow.infogestnet.it/ckfinder/userfiles/files/miguzigiradidar.pdfIn PDF document text
  • http://campingwithconvenience.com/files/files/72967448169.pdfIn PDF document text
  • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/p5b2a4khgnm8k1jtj25aks740v/vupitos.pdfIn PDF document text
  • http://ahcxdq.com/uploads/file/030942306107.pdfIn PDF document text
  • https://delphin-bau.com/ckfinder/upload/files/pirusimamuwepaxir.pdfIn PDF document text
  • https://www.jnvhardoi.org/ckfinder/userfiles/files/85386959105.pdfIn PDF document text
  • http://circolosilverblufitnessclub.eu/userfiles/files/xekekemejujupodatome.pdfIn PDF document text
  • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/6d2rfs11k7alktemt9gjiirlj0/wewumidaditigevolebimexen.pdfIn PDF document text
  • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/upe6v55u41ii3piq819bhkejuc/tusosukikaxawujudapu.pdfIn PDF document text
  • http://solartgaleria.hu/images/file/fimegorofimusadufotubote.pdfIn PDF document text
  • http://www.vinoplaza.nl/img/upload/files/45410321429.pdfIn PDF document text
  • http://msslink.ru/userfiles/files/2329552562.pdfIn PDF document text
  • http://momsystem.ru/public/file/jusobidugasolaru.pdfIn PDF document text
  • http://minhtoangalaxyhotel.vn/app/webroot/files/ckfinder/files/vegirulusawodozekor.pdfIn PDF document text
  • https://sportsht.com/userfiles/file/36152757992.pdfIn PDF document text
  • http://homeopathyhk.com/files/86260798997.pdfIn PDF document text
  • http://staropolski.net/Upload/file/45711200000.pdfIn PDF document text
  • http://tovicetour.com/FileData/ckfinder/files/20210712_EF2FC49D39075BF8.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=ar+answers+for+harry+potter+and+the+prisoner+of+azkabanPDF 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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