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://moodlabnewlife.nl/uploads/1/3/0/2/130272278/130272278.html#bootstrap+glyphicons+file PDF link annotation

  • http://lawyersforveteransfirstresponders.com/uploads/1/3/1/6/131636777/jefamutiwu_texina.pdfIn PDF document text
  • http://allanboakmusic.com/uploads/1/3/0/7/130739393/melabiwogetote.pdfIn PDF document text
  • http://ryanita-wedding.com/uploads/1/3/0/6/130604693/zadakog-xofiduwuwego.pdfIn PDF document text
  • http://forge-x.media/uploads/1/3/1/3/131381712/nisal_vefumepofede_feledol.pdfIn PDF document text
  • http://tgiiihealthcaresolutions.com/uploads/1/3/0/5/130541904/nesaxejubemogil_kapusob_novojedo.pdfIn PDF document text
  • http://gwcbristowwhps.org/uploads/1/3/0/9/130969829/welovumogorajogojape.pdfIn PDF document text
  • http://diaetguru.net/uploads/1/3/1/4/131407846/99c363bc35.pdfIn PDF document text
  • http://equipro.org/uploads/1/3/0/8/130813514/foxuxeli.pdfIn PDF document text
  • http://az60industrial.com/uploads/1/3/0/3/130313470/ef2214009c505d.pdfIn PDF document text
  • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
  • http://www.typoland.com/In PDF document text
  • http://scripts.sil.orgThisIn PDF document text
  • http://www.stixfonts.orgIn PDF document text
  • http://www.micropress-inc.comIn PDF document text
  • http://www.stixfonts.org/user_license.htmlIn PDF document text
  • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
  • http://www.stixfonts.orghttp://www.micropress-inc.comAsIn 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
  • https://savannah.gnu.org/projects/freefont/In PDF document text
  • http://www.gnu.org/licenses/In PDF document text
  • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
  • http://scripts.sil.org/OFLIn PDF document text
  • http://scripts.sil.org/In PDF document text
  • http://scripts.sil.org/OFLAbyssinicaIn PDF document text
  • http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFLIn 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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