Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://pexulowiseguwuz.weebly.com/uploads/1/3/4/3/134391342/99e6c1.pdf.
• 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.
• Fake invoice / payment lure low SE_INVOICE_LURE
  Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
• 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://traffine.ru/aws?keyword=chase+bank+subpoena+service In PDF document text

  • https://pexulowiseguwuz.weebly.com/uploads/1/3/4/3/134391342/99e6c1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4418584/normal_5fa2dce83e1a8.pdfIn PDF document text
  • https://wilunozuwi.weebly.com/uploads/1/3/4/4/134432110/1e7428cd.pdfIn PDF document text
  • https://pozanabuloga.weebly.com/uploads/1/3/4/3/134366917/677ab96575da47e.pdfIn PDF document text
  • https://kulojimafad.weebly.com/uploads/1/3/4/5/134518235/jukifegedane.pdfIn PDF document text
  • https://sanaxuruvumuvuk.weebly.com/uploads/1/3/1/4/131438582/ponepubawijis.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4415974/normal_5f970c3dab7c7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368759/normal_5fa1f40deb395.pdfIn PDF document text
  • https://wusoxebuwewete.weebly.com/uploads/1/3/4/4/134432123/88b3cb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4426556/normal_5fa2eb0082bbc.pdfIn PDF document text
  • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/cae83016b58fe7b.pdfIn PDF document text
  • https://kogemamol.weebly.com/uploads/1/3/4/4/134487898/zupojesuwenud_wipobaxari_sarexam.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382201/normal_5f9f595647cc0.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/zomuzigo/difikas.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files/glossaire_de_l_assurance.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 PDF document text

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