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://pillailaw.org/uploads/1/3/0/6/130620401/130620401.html#pelicula+mexicana+el+infierno+completa+en+espa%C3%B1ol+latino PDF link annotation

  • http://childrenshospitalholidaycardproject.org/uploads/1/3/0/5/130540525/8471294.pdfIn PDF document text
  • http://urbanzenco.com/uploads/1/3/0/7/130776341/vutaredud-munodo-vakiboke-nojum.pdfIn PDF document text
  • http://roadracewarrior.com/uploads/1/3/0/6/130640071/sunulukaviv-nujulozaje-poluni.pdfIn PDF document text
  • http://cognitivebehaviouralpsychotherapy.net/uploads/1/3/0/3/130313000/316259.pdfIn PDF document text
  • http://tomandrachelwedding.com/uploads/1/3/0/7/130775078/7965661.pdfIn PDF document text
  • http://stonewaytransportllc.com/uploads/1/3/0/7/130775563/xujuduvatawiludugemo.pdfIn PDF document text
  • http://lilmissrealtor.com/uploads/1/3/1/3/131384289/fa63e4f2d7a591.pdfIn PDF document text
  • http://shaynacphotography.com/uploads/1/3/0/8/130874658/getuwiwam.pdfIn PDF document text
  • http://penpies.com/uploads/1/3/0/4/130436007/893c6fe58f5.pdfIn PDF document text
  • http://weeareheroes.com/uploads/1/3/1/4/131409557/fezexaj.pdfIn PDF document text
  • http://ss4js.com/uploads/1/3/0/8/130814788/239c7932fe26000.pdfIn PDF document text
  • http://hcfaith.org/uploads/1/3/0/6/130639679/satuzu-xenowopukik-ruwapafaruz-moxuse.pdfIn PDF document text
  • http://abbiescookbook.com/uploads/1/3/0/6/130620940/jumibo_wuwimuwi_dumuses.pdfIn PDF document text
  • http://wheretheroadrises.com/uploads/1/3/0/7/130775268/219293.pdfIn PDF document text
  • http://cianocarrollsolicitor.com/uploads/1/3/0/6/130639547/solomebuzometamune.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
  • 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

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