Malicious PDF — malware analysis report

Heuristics 5

• 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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• External URI info PDF_URI
  PDF contains an external URL action
• 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 http://1stmuserconcertkolkata.com/uploads/1/3/1/1/131164462/131164462.html#si+plus+que+parfait+conditionnel+passe+exercices+pdf PDF link annotation

  • http://moralehemp.com/uploads/1/3/0/7/130775634/39e71dea.pdfIn PDF document text
  • http://ngprestacaodeservicos.net/uploads/1/3/1/0/131070651/taxaginawudipat.pdfIn PDF document text
  • http://ips10presentation.com/uploads/1/3/1/1/131164419/lovigomeziboba.pdfIn PDF document text
  • http://jeffsof.com/uploads/1/3/0/7/130775015/85951e903375c33.pdfIn PDF document text
  • http://gr8bonus.com/uploads/1/3/0/7/130739624/gapejepuzotamogolati.pdfIn PDF document text
  • http://dreykinglive.com/uploads/1/3/0/5/130539820/156628.pdfIn PDF document text
  • http://jodistaszakmarriageandfamilytherapist.com/uploads/1/3/0/5/130588220/nonatovadel.pdfIn PDF document text
  • http://cmrmeetings.com/uploads/1/3/1/3/131383854/tivosuse.pdfIn PDF document text
  • http://thejoyofsucculents.com/uploads/1/3/0/6/130620631/dedoledusafe_zelolofefenuxo_danalu_zuwowegupepovez.pdfIn PDF document text
  • http://memphiscartonera.org/uploads/1/3/0/4/130491322/b8ef85e.pdfIn PDF document text
  • http://ceo2b.com/uploads/1/3/0/4/130477040/zupizejefuzu.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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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