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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
• 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/aws?keyword=10th+social+new+book+english+medium+in+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4367290/normal_5f879e7e086a3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366040/normal_5f8c62ca17c87.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380393/normal_5f9398361bf4b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382004/normal_5f8d9119523ff.pdfIn PDF document text
  • https://pibazafefudo.weebly.com/uploads/1/3/0/7/130776509/af108.pdfIn PDF document text
  • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/82e306640f.pdfIn PDF document text
  • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/wikuwiwa.pdfIn PDF document text
  • https://relulime.weebly.com/uploads/1/3/4/3/134384492/bazexoxi.pdfIn PDF document text
  • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/farururobukuxe.pdfIn PDF document text
  • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/fef7f.pdfIn PDF document text
  • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/174fd1b5f85.pdfIn PDF document text
  • http://fedorahosted.org/lohitIn extracted file (stream_004_off00007988.bin)
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000065aa.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000065aa.bin)
  • https://uploads.strikinglycdn.com/files/880d4191-e67c-409b-ae25-1e8deee60cc4/vagimerufolo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b761dbe2-31c8-4c8b-b46a-64bc45e7f33f/51070253993.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/73f931b3-497b-4ae5-b86a-26c1bba8632d/oo_jane_jana_dhunde_tujhe_diwana_mp3.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f730c7e0-425c-4da2-b76e-7213afb10319/wadajobaki.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c2467d6e-7d78-42aa-ba5a-03b1703b27f0/81167673479.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3d3c622e-ff53-4126-81fe-c08c24d92300/18967992975.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1a47a0a0-f495-4ec8-9d72-f3877f78dc97/95700182097.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d053e0f6-50ac-4e85-9056-cce35f59d720/fubefiguzimezegonim.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/2896/3747/files/14468707498.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/8188/2013/files/honeywell_thermostat_lr1620_wiring.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/23852146950.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 (stream_004_off00007988.bin)

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