Malicious PDF — malware analysis report

Heuristics 7

• 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.
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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 https://catamma.ru/uplcv?utm_term=diskdigger+pro+app PDF link annotation

  • http://jhdljz.com/userfiles/file/1631303975.pdfIn PDF document text
  • https://innovativallatgyogyszer.hu/fileok/file/koxerajuvanesaf.pdfIn PDF document text
  • https://weboonline.com/ckfinder/userfiles/files/waguxelixudog.pdfIn PDF document text
  • http://abogarestudio.com/userfiles/file/16243000656.pdfIn PDF document text
  • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/3b725bd21af5ec10b249c46440b8deb8/10538564462.pdfIn PDF document text
  • https://livredart.com/ckfinder/userfiles/files/32841879882.pdfIn PDF document text
  • http://sxsasa.org/images_fck/file/1631991825.pdfIn PDF document text
  • https://horizontire.com/userfiles/file/mapafurimazomobenarujoziz.pdfIn PDF document text
  • http://dungcucaytrong.com/images/files/ladij.pdfIn PDF document text
  • https://altstudio.be/app/webroot/uploads/file/29749865247.pdfIn PDF document text
  • http://lagostena.it/userfiles/files/64071814251.pdfIn PDF document text
  • https://htapigroup3.com/contents/files/3775465383.pdfIn PDF document text
  • http://nusratali.com/userfiles/files/giturulamezomela.pdfIn PDF document text
  • http://machinesupplier.cn/data/product/file/202193_41216_785.pdfIn PDF document text
  • http://shangrilayunnan.com/ckfinder/userfiles/files/39321742622.pdfIn PDF document text
  • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1614441a557259---tujatup.pdfIn PDF document text
  • http://zulassungsservice4you.de/bilder/file/bavifebariberejunog.pdfIn PDF document text
  • https://westhygiene.hu/editor_up/gofolapeboladezamemim.pdfIn PDF document text
  • http://onlytech-tunisie.com/userfiles/file/90746610315.pdfIn PDF document text
  • https://toskov-yordanov.com/userfiles/file/17339199919.pdfIn PDF document text
  • http://demo-jesma.shopcloud.es/ckfinder/userfiles/files/muwuzejepevamukogatuxog.pdfIn PDF document text
  • http://omeofest.eu/userfiles/files/balika.pdfIn PDF document text
  • http://wwsm-hk.com/files/file/numazowivozekawefa.pdfIn PDF document text
  • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/27ea8762d217e31b42b743bbeb1597c5/tifisab.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/4103072373.pdfIn PDF document text
  • http://zdravi-kromeriz.cz/files/file/debelonimerasu.pdfIn PDF document text
  • http://z500.si/files/kaniru.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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