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.
• 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.
• 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://gettraff.ru/strik?keyword=depression+and+anxiety+journal+pdf In PDF document text

  • http://zigazepo.source-medicine.com/uploads/1/3/0/7/130776492/wudolabekeruju.pdfIn PDF document text
  • http://mumak.kaymadeit.com/uploads/1/3/0/8/130813554/5016458.pdfIn PDF document text
  • http://files.birchfieldpractice.co.uk/uploads/1/3/1/1/131163632/vatij.pdfIn PDF document text
  • http://files.creamwoodlabradors.co.uk/uploads/1/3/1/6/131606367/4130897.pdfIn PDF document text
  • https://site-1036681.mozfiles.com/files/1036681/98688494122.pdfIn PDF document text
  • https://site-1036939.mozfiles.com/files/1036939/68884188156.pdfIn PDF document text
  • https://site-1038595.mozfiles.com/files/1038595/gawurenigepilaxagu.pdfIn PDF document text
  • https://site-1037228.mozfiles.com/files/1037228/89733143762.pdfIn PDF document text
  • https://site-1036760.mozfiles.com/files/1036760/16594640663.pdfIn PDF document text
  • http://files.5aelite.org/uploads/1/3/1/4/131453397/de14fdaa.pdfIn PDF document text
  • http://files.cptoffice.com/uploads/1/3/0/7/130739287/6460365.pdfIn PDF document text
  • http://nilex.oscarxavierdelsebastien.com/uploads/1/3/0/7/130776394/acba4126c2eb42.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000064d6.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000064d6.bin)
  • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off000099a3.bin)
  • https://uploads.strikinglycdn.com/files/9644fbcf-b95a-4625-8acc-ede2603be6d0/29636629977.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4d7042c7-1f07-46e9-adf7-e8cb9fee4304/38299476235.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c8fee6a9-ac91-46e4-90e4-eb8c7506d862/noxamosobipod.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_off000064d6.bin)

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