Malicious PDF — malware analysis report

Heuristics 6

• 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 https://ultralloy.net/upload/files/33373865335.pdf In PDF document text

  • https://wrd13.com/force/file/65596681593.pdfIn PDF document text
  • http://alhouti.com/userfiles/file/260034506.pdfIn PDF document text
  • http://xn--zb0by3yusal20ak5lcidnwigi.com/ckfinder/userfiles/files/1624551354.pdfIn PDF document text
  • http://nbkhjc.com/uploads/202108/file/2108070643448746607tr0ncx0r6xr.pdfIn PDF document text
  • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a4d4ddd34---43519904823.pdfIn PDF document text
  • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/n625uinsa3gb7877rv71ihmma1/lidijibemejufu.pdfIn PDF document text
  • http://www.abcklima.hu//data/editorfile/sabojafuvonesowaxa.pdfIn PDF document text
  • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/5e957ee526f5e97231139a50243858db/14701436562.pdfIn PDF document text
  • https://indirimlipin.com/calisma2/files/uploads/4945198719.pdfIn PDF document text
  • http://modern-pro.ru/files/file/96706942326.pdfIn PDF document text
  • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160d0315303459---zafowepukafewuvemijiredu.pdfIn PDF document text
  • https://egyseg.eu/ckfinder/userfiles/files/93071890546.pdfIn PDF document text
  • http://tuanlongland.com/upload/files/rowexutejoneto.pdfIn PDF document text
  • http://pwr-tech.ru/userfiles/file/vidovesulukubijijil.pdfIn PDF document text
  • https://accuratesearch.com/userfiles/file/fomezi.pdfIn PDF document text
  • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/52fbb8fa0cf22f3a52e41aa584d7f7a1/1442616994.pdfIn PDF document text
  • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/24a324b75c1c540c8a2d8af2337b71c2/89601872082.pdfIn PDF document text
  • http://farmina.ru/uploads/files/timodad.pdfIn PDF document text
  • https://worldmedglobal.com/userfiles/files/95768249693.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/18933770456.pdfIn PDF document text
  • https://biothiennam.com/media/ftp/file/32317955993.pdfIn PDF document text
  • http://imaginove.eu/data/Files/sademewajapinavetawofa.pdfIn PDF document text
  • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d94ecd2c75f---wigiwukotimex.pdfIn PDF document text
  • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160bd96b15f3c4---54987103902.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=types+of+investment+in+security+analysis+and+portfolio+managementPDF 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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