Malicious PDF — malware analysis report

Heuristics 6

• 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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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://airshipenterprises.com/uploads/1/3/0/8/130813592/130813592.html#funcion+residuo+en+matlab PDF link annotation

  • http://www.heatherraenorthway.com/uploads/1/3/0/6/130604369/suvufopepuxage.pdfIn PDF document text
  • http://madameallen.org/uploads/1/3/0/2/130288567/7124046.pdfIn PDF document text
  • http://birminghamobediencetrainingclub.com/uploads/1/3/0/7/130739046/106b0bd0fe6f.pdfIn PDF document text
  • http://www.indiginousscene.com/uploads/1/3/0/6/130639068/sujagatiretubikalax.pdfIn PDF document text
  • http://castlehilltop.com/uploads/1/3/0/7/130739535/nexavalijezemiwez.pdfIn PDF document text
  • http://2apples2oranges.net/uploads/1/3/0/6/130604720/9180368.pdfIn PDF document text
  • http://www.judaicabyjimcohen.com/uploads/1/3/0/8/130813117/dabidewisozedepixosu.pdfIn PDF document text
  • http://sdpremiumholdings.com/uploads/1/3/0/6/130620931/2a8b14ae40.pdfIn PDF document text
  • http://hostmaster.negotiation-alchemy.com/uploads/1/3/0/8/130815031/gerugonebasij.pdfIn PDF document text
  • http://nzuria.com/uploads/1/3/0/5/130550657/58c6be.pdfIn PDF document text
  • http://tradeshowsinphoenix.com/uploads/1/3/0/8/130814630/zizatolawejosedoj.pdfIn PDF document text
  • http://www.blackdogcottagepublishing.com/uploads/1/3/0/7/130739688/9292799.pdfIn PDF document text
  • http://wellmedexpress.com/uploads/1/3/0/4/130483542/bilatekoxupimek-ririgegu.pdfIn PDF document text
  • http://psychologynikkigrant.com/uploads/1/3/0/2/130289224/lasigifogaf.pdfIn PDF document text
  • http://lesliehaddow.com/uploads/1/3/0/7/130739564/jojadis.pdfIn PDF document text
  • http://vehicleloanusa.com/uploads/1/3/0/4/130483047/jekekemiwitimi-wubax.pdfIn PDF document text
  • http://dactilar.es/uploads/1/3/0/8/130813934/3221003.pdfIn PDF document text
  • http://www.nhwcmd.com/uploads/1/3/0/2/130273814/5002117.pdfIn PDF document text
  • http://aninhastore.com/uploads/1/3/0/6/130604366/7f99254.pdfIn PDF document text
  • http://areshfraser.com/uploads/1/3/0/6/130621547/remujiwigijapa.pdfIn macro / runtime command snippet
  • http://www.ridetarga.co.uk/uploads/1/3/0/5/130588415/vonofugemab_famerukibune_viratenuz.pdfIn PDF document text
  • http://tiagomasluka.com/uploads/1/3/0/6/130639662/7733334.pdfIn PDF document text
  • http://vpn.ccg-i.com/uploads/1/3/0/5/130588187/wujamofu.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

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