Malicious PDF — malware analysis report

Heuristics 5

• 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.
• 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://ttraff.ru/wb?keyword=blumeria%20graminis%20pdf

  • http://files.getitwright.com/uploads/1/3/0/7/130776788/pufim-fafopunatobi.pdf
  • http://files.appletreecontractors.com/uploads/1/3/1/6/131607712/9709263.pdf
  • http://files.biggsbassethounds.com/uploads/1/3/1/8/131857071/84fb7a2093dbc.pdf
  • http://files.swerochester.org/uploads/1/3/0/9/130970014/9ab31f.pdf
  • http://files.livingmetroeast.com/uploads/1/3/0/7/130739769/kigatod.pdf
  • http://files.wilmingtonprintandmail.com/uploads/1/3/1/6/131637057/cd8bc305482.pdf
  • http://files.illinoisdelta.org/uploads/1/3/2/6/132681938/2186787.pdf
  • http://files.legacyhorselogging.com/uploads/1/3/1/6/131636990/rakofidi-tuxujojaxeki.pdf
  • http://files.prehistoriccollector.com/uploads/1/3/1/1/131164351/womasijin.pdf
  • http://files.cambderma.co.uk/uploads/1/3/1/3/131380953/barudepazotakid.pdf
  • http://files.dunbarband.org/uploads/1/3/1/3/131379951/6b2c0c5611b7.pdf
  • http://www.ascendercorp.com/
  • http://www.ascendercorp.com/typedesigners.html
  • https://tesodufow.files.wordpress.com/2020/06/seziwetafo.pdf
  • https://jubujotilo.files.wordpress.com/2020/06/14099877296.pdf
  • https://zirazeru.files.wordpress.com/2020/06/56253942999.pdf
  • https://dabatesi.files.wordpress.com/2020/07/karafikibev.pdf
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://scripts.sil.org/OFL
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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