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.
• 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://gokipeko.weebly.com/uploads/1/3/4/3/134351508/fegaka_zafanojuvili_zibomumugizebav_wupalefepa.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.
• 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://traffking.ru/123?keyword=microsoft+store+app+update In PDF document text

  • https://gokipeko.weebly.com/uploads/1/3/4/3/134351508/fegaka_zafanojuvili_zibomumugizebav_wupalefepa.pdfIn PDF document text
  • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/depamawo.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4416811/normal_5f9f3b7ff3a3e.pdfIn PDF document text
  • https://kogamawuxeg.weebly.com/uploads/1/3/4/5/134581879/6233812.pdfIn PDF document text
  • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/vovadigofovexuneze.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408987/normal_5f9ba0ac86f7a.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005f77.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005f77.bin)
  • https://s3.amazonaws.com/jaburirarov/ellen_hopkins_perfect.pdfIn PDF document text
  • https://lenitipazevu.files.wordpress.com/2020/11/xisagobibesaxugidin.pdfIn PDF document text
  • https://s3.amazonaws.com/rixevozajixezos/analysing_data_in_qualitative_research.pdfIn PDF document text
  • https://sefudizod.files.wordpress.com/2020/11/xitowej.pdfIn PDF document text
  • https://s3.amazonaws.com/dezajok/8753923172.pdfIn PDF document text
  • https://s3.amazonaws.com/penale/anatomic_pathology_board_review.pdfIn PDF document text
  • https://s3.amazonaws.com/salosibejodod/4109583410.pdfIn PDF document text
  • https://gogajajar.files.wordpress.com/2020/11/48539197016.pdfIn PDF document text
  • https://s3.amazonaws.com/xenavuxa/the_house_without_windows_imdb.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_off00005f77.bin)

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