Malicious PDF — malware analysis report

Static analysis result for SHA-256 40574c919b88e359…

MALICIOUS

PDF

66.7 KB Created: 2021-03-11 12:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f416a652315368f242068200faf2052e SHA-1: adadda3da9ea41d64235e020c48b5666318aa7cf SHA-256: 40574c919b88e3593b699c41e139331f7234fb289e00759978e05bfb084dc739
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=bissell+spotclean+little+green+user+guide PDF link annotation
    • http://magazinrf.xyz/topographical_survey_reportmv1b9.pdfIn PDF document text
    • http://goodnatural.space/ed_verbs_worksheetd74j5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482426/normal_6015bd40c312b.pdfIn PDF document text
    • https://cdn.sqhk.co/fopikudapom/ydhiqmN/81092955120.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/OuQjjic/planet_minecraft_custom_survival_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450907/normal_5fe6265353f2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452837/normal_6032a42087545.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/d196eecd284.pdfIn PDF document text
    • https://tuxibefogeja.weebly.com/uploads/1/3/4/3/134359070/jujif.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/ziwekeruzoxotewozegi.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/pOgcihU/champions_league_tournament_maker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481055/normal_5febbfb081acf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417329/normal_6001482d7b7de.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/7c05a394-1939-4547-b562-b4fda8216dcd/how_to_purchase_shares_in_singapore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1078e043-a156-4546-a9d7-c2121b365590/unity_terrain_assets_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/975a2afe-e2f3-497f-83cf-592ce5c23757/sizok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9b288e1-820e-429f-8e88-bbe31c090de8/netgear_gs105e_reset.pdfIn PDF document text
    • http://xolavozezimodan.onlinewebshop.net/10577667489.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_off0000ca88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA88 5292 bytes
SHA-256: c3da6be5ab06c6d20c38941747a17bbb980648a41d58c3fb85884f4e6024d81e
font_01_sfnt_off0000dc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC93 9696 bytes
SHA-256: 19b3fec0cd598192647a4af749c0e9460c6c684ea20ca81cfbebab01655570db