Malicious PDF — malware analysis report

Static analysis result for SHA-256 b21b3a5cbf20fdc8…

MALICIOUS

PDF

72.1 KB Created: 2021-03-05 01:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9462818f0c7203ba3fe32edad3d2ef4d SHA-1: c9b0e56021dd4bc1ebdad49cf8d644ed20391603 SHA-256: b21b3a5cbf20fdc8adc7b452c3dfa060f942721aa8eb1dd36874ca23047710bc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/award?keyword=samsung+rf26hfendsr+freezer+not+working PDF link annotation
    • http://fajiriduxir.medianewsonline.com/92244672528.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/4610154515.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/citizen_eco_drive_world_time_chronograph_easyjet.pdfIn PDF document text
    • http://defokozixeral.sportsontheweb.net/kitchenaid_mixer_k5ss_parts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412583/normal_5fd822d8ea1ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463272/normal_602123f973a33.pdfIn PDF document text
    • http://bellissimo.online/how_computers_work_simple_explanationnst07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501632/normal_5fd7a78f9d6a8.pdfIn PDF document text
    • http://korecos.ru/xikarizifulizokenoxim5edi2.pdfIn PDF document text
    • http://nakozek.mypressonline.com/barney_happy_birthday_song_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480598/normal_603d904cc5712.pdfIn PDF document text
    • http://classkaod.ru/bed_plan_cad_block_free3xcaf.pdfIn PDF document text
    • http://repair-telefonov.ru/survival_craft_2._2_apkpnket.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/75d9eead-1697-484c-9280-c2eeaba8702f/rogue_trader_character_sheet_fillable.pdfIn PDF document text
    • http://fuxunowelujuxa.atwebpages.com/30805273453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4f5d57-912e-407f-b83c-ad0c734cbbd6/how_to_change_ink_cartridge_epson_xp_205.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/bafenu.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/interzone_954_part_b_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/excel_vba_protect_sheet_with_password_options.pdfIn PDF document text
    • http://pedamodaw.onlinewebshop.net/how_to_adjust_rainbird_5000_sprinkler_head_distance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed6485d8-543d-4001-b994-3f338a8f8f32/how_many_pages_are_in_keeper_of_the_lost_cities_flashback.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/authorised_share_capital.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_off0000dc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2A 5884 bytes
SHA-256: 94e43ec0b886a9526533a6b146aea749c73d648c0284e52572996175a09c59e7
font_01_sfnt_off0000f022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF022 10104 bytes
SHA-256: f7a75d7172ec2dfa02b77953ca9fa1b7dcb6e9380d5d6fb2fbdb9e69d85025be

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