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://cctraff.ru/aws?keyword=unique+binary+search+trees+leetcode In PDF document text

  • https://cdn-cms.f-static.net/uploads/4379969/normal_5f8b4e519145a.pdfIn PDF document text
  • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/tujuwizizilelof-mugujo-jifewifuja.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377102/normal_5f8aabc0c749e.pdfIn PDF document text
  • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/7436594.pdfIn PDF document text
  • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/peximituge.pdfIn PDF document text
  • https://danawejenig.weebly.com/uploads/1/3/4/4/134499985/4e7494b472.pdfIn PDF document text
  • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/5035536.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4407316/normal_5f9292a032edc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4404514/normal_5f97a9f015d37.pdfIn PDF document text
  • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/zupaxevekod-puzig-reluziwajit-rubutipos.pdfIn PDF document text
  • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/pokobu-pidoror-pekirez.pdfIn PDF document text
  • https://zadavutuni.weebly.com/uploads/1/3/4/3/134343582/togatubabevaf_xozefevuxivufun.pdfIn PDF document text
  • https://zirenujunez.weebly.com/uploads/1/3/4/4/134431605/1184972.pdfIn PDF document text
  • http://www.opentle.orgIn extracted file (stream_004_off00005f3a.bin)
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004cf7.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004cf7.bin)
  • https://s3.amazonaws.com/zedilegol/vudola.pdfIn PDF document text
  • https://s3.amazonaws.com/bevarolimesale/hanuman_chalisa_telugu_with_meaning.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://www.gnu.org/licenses/gpl.htmlIn extracted file (stream_004_off00005f3a.bin)
  • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off00004cf7.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off0000a88c.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off0000a88c.bin)

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