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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
• 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://kyflowernseed.com/uploads/1/3/1/3/131381481/131381481.html#sony+mdr+rf985r+connect+to+phone PDF link annotation

  • http://elkhartcottagecarecrystalcottagecare.com/uploads/1/3/0/5/130551015/f8858389c.pdfIn PDF document text
  • http://denisekamm.com/uploads/1/3/1/4/131409717/fa21e35bc183c7.pdfIn PDF document text
  • http://gailfranklin.com/uploads/1/3/0/4/130435561/wuvatex_sewoxijanujiwim_wojuxilo.pdfIn PDF document text
  • http://thenaturallearner.com/uploads/1/3/1/3/131383777/tubinagopuz.pdfIn PDF document text
  • http://dallasairductcleaning.net/uploads/1/3/1/3/131384260/1444684.pdfIn PDF document text
  • http://vladtheinventor.org/uploads/1/3/0/7/130740385/a4ec29fe9d350.pdfIn PDF document text
  • http://partnersinrelief.com/uploads/1/3/1/0/131070137/53f1fe3.pdfIn PDF document text
  • http://prosseracupuncture.com/uploads/1/3/0/5/130588865/maviwavurududeko.pdfIn PDF document text
  • http://saltandjuniper.com/uploads/1/3/0/9/130969937/fivubope-lusilobokowipi-jalavukapasozus-pidulavuta.pdfIn PDF document text
  • http://spacetimecafesartesanais.com/uploads/1/3/0/2/130291779/d926455824.pdfIn PDF document text
  • http://amballoonexpress.com/uploads/1/3/1/4/131437283/dcc2b.pdfIn PDF document text
  • http://gweniveremoon.com/uploads/1/3/0/6/130620542/rorebo.pdfIn PDF document text
  • http://journeysofalifetime.net/uploads/1/3/1/4/131407507/dogakafas_dabijodigixu_jisupinif.pdfIn 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.stixfonts.org/user_license.htmlIn 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://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFLIn PDF document text

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