Malicious PDF — malware analysis report

Heuristics 7

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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.
• 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://gettraff.ru/strik?keyword=contoh+soal+akuntansi+perusahaan+jasa+beserta+jawaban+pdf In PDF document text

  • http://senowe.sarahsheppardsart.com/uploads/1/3/1/0/131070374/tuxovaxixez.pdfIn PDF document text
  • http://pazumeka.ourlittlebitranch.com/uploads/1/3/0/7/130775389/nilajoselovajebetuw.pdfIn PDF document text
  • http://files.abundantlivingpsychologicalandcoachingservices.com/uploads/1/3/1/4/131438111/f6b4e3c787f.pdfIn PDF document text
  • http://gumepiv.dreamoncurls.com/uploads/1/3/0/7/130776366/fedezetutagiv.pdfIn PDF document text
  • https://site-1038600.mozfiles.com/files/1038600/befosagijusozulazifolo.pdfIn PDF document text
  • https://site-1037057.mozfiles.com/files/1037057/dabub.pdfIn PDF document text
  • https://site-1038915.mozfiles.com/files/1038915/50114661927.pdfIn PDF document text
  • https://site-1038856.mozfiles.com/files/1038856/69899464011.pdfIn PDF document text
  • https://site-1036955.mozfiles.com/files/1036955/98115159601.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/551962bb-5e76-4a33-9078-59d4af25ebe6/89691302581.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2836e74d-2da0-4fea-a970-61d36d48babe/tuwomakobubig.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/524af4dc-01af-43cd-89af-0c39fcef031a/10366678829.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/846318b5-3bd7-4d37-a6d8-f60f5d0cb43f/97220213597.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6a2b0ffe-5da7-416e-ac99-1731de7d402f/vivisosegalade.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://scripts.sil.org/OFLIn PDF document text

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