Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
  Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
• 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) documents that carry no urgency or charge/dispute escalation.
• 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://nipisod.ru/strik?utm_term=how+to+file+an+aflac+hospital+indemnity+claim+online PDF link annotation

  • https://static.s123-cdn-static.com/uploads/4457561/normal_6005caa32419c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4500429/normal_602b933f41f8b.pdfIn PDF document text
  • https://rifituxajigibik.weebly.com/uploads/1/3/4/5/134519767/4cbdb002b30ee.pdfIn PDF document text
  • https://devarewiwigunum.weebly.com/uploads/1/3/2/7/132710712/9825696.pdfIn PDF document text
  • http://zezasasipow.iblogger.org/30972189820.pdfIn PDF document text
  • http://tuvuvadirozo.iblogger.org/74438375496.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4385421/normal_6024be6dbc2af.pdfIn PDF document text
  • https://jivefumo.weebly.com/uploads/1/3/0/7/130776755/pesadeximir-vezadomi-bimuwukageb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4474218/normal_5fea068d5e7a2.pdfIn PDF document text
  • https://lemusudavigi.weebly.com/uploads/1/3/5/3/135395292/2c878a5.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4368230/normal_5ff69332e618a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4458404/normal_5fd1d1d649d3b.pdfIn PDF document text
  • https://xibijogoxedugo.weebly.com/uploads/1/3/4/6/134662411/f31b110f357c9f.pdfIn PDF document text
  • https://paporese.weebly.com/uploads/1/3/1/0/131071113/matit_fizodi_vekuxevop.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4455377/normal_600679a03db81.pdfIn PDF document text
  • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/metuguf.pdfIn PDF document text
  • https://katalulipof.weebly.com/uploads/1/3/2/7/132710678/warejosakevunem.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4382958/normal_5ff255cabe745.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://4b3b4da4-1145-40fd-8a04-0ac29766dab0.filesusr.com/ugd/6c6203_5ad34144986e48a5a3e1154ac0ce4f68.pdf?index=trueIn PDF document text
  • https://02796127-04ec-4c85-b270-c6f7310ebb18.filesusr.com/ugd/ce0e6d_68fde3f796444dd1a913889ea3013797.pdf?index=trueIn PDF document text
  • https://0f424234-9c27-4462-a606-4b2ccecf17d8.filesusr.com/ugd/b42a09_fc1dd4463da64c53b1f000762d6472d7.pdf?index=trueIn PDF document text
  • http://judinola.epizy.com/how_to_remove_lid_of_pressure_cooker.pdfIn PDF document text
  • https://78fa80b2-8629-447b-ad63-53e91e8d4948.filesusr.com/ugd/8f02de_2fa618b35f78410fad117e31730a020c.pdf?index=trueIn 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 PDF document text

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