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.
• 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://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/04e8357781d.pdf.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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.
• 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://ggtraff.ru/123?keyword=como+descargar+spotify+para+android In PDF document text

  • https://cdn-cms.f-static.net/uploads/4368751/normal_5f88def81e448.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365638/normal_5f87640a40ee2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376369/normal_5f89bcddc0359.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366306/normal_5f89535b7a063.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366055/normal_5f877f601e8ec.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369502/normal_5f88b286397fd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365525/normal_5f87077966ba9.pdfIn PDF document text
  • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/04e8357781d.pdfIn PDF document text
  • https://jobubati.weebly.com/uploads/1/3/1/4/131453688/xeraki.pdfIn PDF document text
  • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/mikukinib.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/53e19246-ff6c-4693-a3fb-db2db91e5d29/majibimexatoziwubuf.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d44fbe45-51a2-496d-9f28-f8269dd8a4b0/91426603039.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6f578187-9077-410b-8ed5-7bebcf1de649/forepabejowiwa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f76e2e01-9887-4b68-ab96-43b2aec7d460/sajofotidotetulud.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/88231972-756a-480b-b3ee-453d7a4e370c/momijakugasawofedovo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/35dcc2fd-3117-4ead-90c8-e9ac22fe9dbd/73883244259.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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