Malicious PDF — malware analysis report

Static analysis result for SHA-256 42d84241125de70f…

MALICIOUS

PDF

73.0 KB Created: 2021-03-05 08:18:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d3691431ec7ff65156cfba5b0fdcbc2b SHA-1: e0023c4b715f9baaedacc29b193b922376efcdde SHA-256: 42d84241125de70f9a16a935ef239ea5435a17adb0eaa05dff78462497959837
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • 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://bologen.ru/award?keyword=compare+and+contrast+essay+two+books+example PDF link annotation
    • http://nejevefivi.mypressonline.com/zepowazofisexepuwebi.pdfIn PDF document text
    • https://cdn.sqhk.co/vutabopi/mij0hbg/air_france_flight_ticket_reservation.pdfIn PDF document text
    • https://cdn.sqhk.co/fivufotimad/jHO9Zgc/zewipabuzovebuxenazita.pdfIn PDF document text
    • https://xatevixi.weebly.com/uploads/1/3/4/6/134651360/rugilowa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470409/normal_5fcbaa73cb3df.pdfIn PDF document text
    • https://cdn.sqhk.co/sejarepezibo/gehgcIO/fagowof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500001/normal_5fc655d54e96d.pdfIn PDF document text
    • https://nokibuvekunel.weebly.com/uploads/1/3/1/1/131164430/b2e50ee219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501998/normal_5fe7a488be983.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422909/normal_5ffda2658d358.pdfIn PDF document text
    • http://tezoxefakalexo.sportsontheweb.net/lugelanof.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/ajbMicR/wallpapers_for_chromebook_among_us.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/jth9aZN/battle_royale_survivors_download_pc_without_epic_games.pdfIn PDF document text
    • http://nokojatagi.mywebcommunity.org/74885014354.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://liraperuwuw.atwebpages.com/paweseko.pdfIn PDF document text
    • http://rorazizaxaf.atwebpages.com/international_financial_management_8th_edition_by_cheol_eun_and_bruce_resnick.pdfIn PDF document text
    • http://futakanawus.onlinewebshop.net/unapproachable_east_3.5.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE084 5592 bytes
SHA-256: cee55212ffe7027ff32571c400d54c20d27fb1b57816bc7b672a9fd7dc99cb5c
font_01_sfnt_off0000f37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37E 10388 bytes
SHA-256: 776448d75b5e0554d07bcd2a77a117fd68db84162cfa9003aefbe1db678b7890