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://s9kfv.slpny.com/uploads/1/3/0/5/130551941/130551941.html#esl+reading+comprehension+worksheets+high+school

  • http://duodulce.com/uploads/1/3/0/3/130323928/f2c22c43.pdf
  • http://mazziccity.com/uploads/1/3/0/7/130776118/402e92.pdf
  • http://investamericaeb5com.com/uploads/1/3/0/2/130289625/4270732.pdf
  • http://kimcopywriting.com/uploads/1/3/0/8/130874340/8953947.pdf
  • http://152811427883146431.com/uploads/1/3/0/5/130590162/8984322.pdf
  • http://wholehealthdiscoverycenter.org/uploads/1/3/0/7/130776795/lorufananufemo_wanuduwusilujaf_vupob.pdf
  • http://northwalestimberframes.com/uploads/1/3/0/4/130489297/newuz.pdf
  • http://ktrpo.com/uploads/1/3/0/9/130969249/rirurisikumupiv_wasubusixekuvu_nitenuxomuv_konivimuwoxusif.pdf
  • http://24cci.com/uploads/1/3/0/6/130603978/7005940.pdf
  • http://gardenglassetc.com/uploads/1/3/0/2/130271148/tidetotetej.pdf
  • http://gadgetuniondistribution.com/uploads/1/3/0/6/130620529/7231009.pdf
  • http://michianapropertyinspections.com/uploads/1/3/0/6/130604716/nenatazitafupu.pdf
  • http://marshallsewell.com/uploads/1/3/0/7/130740553/666836.pdf
  • http://maria-cipriano.com/uploads/1/3/0/5/130543656/5814142.pdf
  • http://openpaw.net/uploads/1/3/0/2/130271028/wexoxega.pdf
  • http://www.neironeformazione.it/uploads/1/3/0/8/130874130/648bba3ad11f88.pdf
  • http://www.cymrhi.com/uploads/1/3/0/3/130323835/7385750.pdf
  • http://www.le-petitelion.com/uploads/1/3/0/2/130272613/e9f23.pdf
  • http://mygrassfedmeat.com/uploads/1/3/0/6/130621115/govazipotoz.pdf
  • http://www.charityandwine.com/uploads/1/3/0/5/130540352/xexevaluj_vodadi_kanesu_mojidixikex.pdf
  • http://www.durabuilteng.com/uploads/1/3/0/5/130588547/8374419.pdf
  • http://alanbakerarchitecturalservices.com/uploads/1/3/0/6/130620979/zaluninuvepemok_savojurukiwofuz.pdf
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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