Malicious PDF — malware analysis report

Heuristics 7

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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
• 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://cctraff.ru/pify?keyword=download+tunnelbear+pro+apk In PDF document text

  • https://cdn-cms.f-static.net/uploads/4380674/normal_5f91b459c378b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369498/normal_5f890aeb51cc6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369912/normal_5f89a5a4589fc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366327/normal_5f912b63c0f49.pdfIn PDF document text
  • https://tiwilofudux.weebly.com/uploads/1/3/1/6/131606348/jebabifuku_limavutuj.pdfIn PDF document text
  • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/ae6209b98.pdfIn PDF document text
  • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/foxulinabosuzu.pdfIn PDF document text
  • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/nididedilimofe.pdfIn PDF document text
  • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/beloxa.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006ce6.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006ce6.bin)
  • https://uploads.strikinglycdn.com/files/39ea0565-e4de-42b3-a4d5-e83f50bfe8cd/34287534901.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/580ea2f0-7a68-4f1d-8b33-1c675e6d61a6/zipudagowijabuvunuvawev.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3a8e1527-d9fb-4a36-a686-e77ed72a1f8a/98307676461.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/320aca74-37ca-47ca-8590-4d139a1009c1/73869873829.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2d540634-11ea-4ee3-81b2-bf7082466395/89496921874.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c266d5c5-2450-4aa5-95c5-974791a3faeb/manaxesugevakijovomev.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f1e0ee05-7b6f-46b5-8da5-531b6efd3535/xefopapavesigevanex.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9c0d28b0-c017-4464-a685-7bdb9fd63bea/didogif.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c021a696-f1f1-4759-857b-b4052591b404/92086733842.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/719a156d-68d4-4978-904b-1eb161d175ee/14729217230.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/976d0cea-516c-4ec6-b471-608539ee711e/renikamodababixigunata.pdfIn PDF document text
  • https://s3.amazonaws.com/xanebavifamopez/losobotolemixalilesuge.pdfIn PDF document text
  • https://s3.amazonaws.com/minaxigevani/27776257089.pdfIn PDF document text
  • https://s3.amazonaws.com/gupuso/notojifowew.pdfIn PDF document text
  • https://s3.amazonaws.com/vidadaviwal/lifapakikofej.pdfIn PDF document text
  • https://s3.amazonaws.com/legenapi/73239236053.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://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off00006ce6.bin)

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