Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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/123?keyword=keep+talking+and+nobody+explodes+apk+full In PDF document text

  • https://cdn-cms.f-static.net/uploads/4375071/normal_5f914c48a67af.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4385613/normal_5f946a03c815d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366010/normal_5f86fc97ae326.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370280/normal_5f88627f35d3c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4389809/normal_5f8d93e741a2c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4386091/normal_5f955775d7580.pdfIn PDF document text
  • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/tolubikajotul-satuxejer-woxuw-pazamedazit.pdfIn PDF document text
  • https://gutugifowofe.weebly.com/uploads/1/3/1/6/131606479/xopoweja.pdfIn PDF document text
  • https://jokineviraxara.weebly.com/uploads/1/3/4/2/134265776/nabovalidipif.pdfIn PDF document text
  • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/954539.pdfIn PDF document text
  • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/7d693f9b48.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4409609/normal_5f953db326bdf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371809/normal_5f90e3c1683f7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384155/normal_5f94ded07c6e7.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006549.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006549.bin)
  • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000b9a4.bin)
  • https://cdn.shopify.com/s/files/1/0501/3680/9665/files/problem_gambling_severity_index.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0503/8650/1806/files/tca_handbook_for_ceramic_tile_installation.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/9374/0705/files/20176242413.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/4818/1666/files/duver.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0479/6153/8727/files/solicitation_letter_example_for_donations.pdfIn PDF document text
  • https://s3.amazonaws.com/tetazino/99265189007.pdfIn PDF document text
  • https://s3.amazonaws.com/sevoga/a_mathematician_s_lament_download.pdfIn PDF document text
  • https://s3.amazonaws.com/mukut/barash_clinical_anesthesia_8th_edition.pdfIn PDF document text
  • https://s3.amazonaws.com/dorobukasawituw/business_plan_notes.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_off00006549.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000a43d.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000a43d.bin)

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