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://razorguard.org/uploads/1/3/0/5/130588318/130588318.html#ejercicios+de+analogias+para+ni%C3%B1os+de+tercer+grado+de+primaria PDF link annotation

  • http://ethnikigrammi.gr/uploads/1/3/0/6/130605380/62f3f413d0923d.pdfIn PDF document text
  • http://southamericarealstate.com/uploads/1/3/0/4/130435842/1320927.pdfIn PDF document text
  • http://gokevinpoe.com/uploads/1/3/0/2/130287428/6999089.pdfIn PDF document text
  • http://bellasicilia.info/uploads/1/3/0/5/130588319/fipeberawejotu.pdfIn PDF document text
  • http://illegalgarageconversionsmadelegal.com/uploads/1/3/0/9/130969940/gugenalipiz.pdfIn PDF document text
  • http://glightfoundation.org/uploads/1/3/0/5/130541209/87781987a256bf.pdfIn PDF document text
  • http://strategicfitnessonline.com/uploads/1/3/0/7/130739256/e14d6e68e568da.pdfIn PDF document text
  • http://petalesdefleurs.com/uploads/1/3/0/5/130545753/6514303.pdfIn PDF document text
  • http://www.juliayouells-edtech.com/uploads/1/3/0/5/130544090/5683539.pdfIn PDF document text
  • http://lynksolutionsllc.com/uploads/1/3/0/3/130313524/pixunorutifetojevor.pdfIn PDF document text
  • http://clutterfreefreedom.com/uploads/1/3/0/4/130494389/cbc204f5721e.pdfIn PDF document text
  • http://pinkchard.com/uploads/1/3/0/6/130639051/rezizone.pdfIn PDF document text
  • http://medleymmc.com/uploads/1/3/0/5/130543020/faropenate-tazigegifigi-dinirixakafew-guvofiwatetuda.pdfIn PDF document text
  • http://susaninwonderland.com/uploads/1/3/0/5/130539111/fufolewibeli.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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