Malicious PDF — malware analysis report

Static analysis result for SHA-256 8340c7f6abc77ac3…

MALICIOUS

PDF

72.6 KB Created: 2021-02-25 03:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e6c8316d58a66f7b738ed0740702201a SHA-1: 89cbeb9be17f6227babb1bf4fbbaa2c630f3f47c SHA-256: 8340c7f6abc77ac3cfcd1af232cd10a9ef95cf4d0fcae441287c12a2b9f40c55
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=why+is+the+screen+on+my+thermostat+blank PDF link annotation
    • https://cdn.sqhk.co/furafurume/hgUiC90/lewagap.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/excel_vba_2d_array_to_range.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/h4CjeeG/nfl_fantasy_draft_cheat_sheet_excel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467298/normal_6027fb06d98ca.pdfIn PDF document text
    • http://korecos.ru/common_core_math_worksheets_6th_grade_ratios8svmi.pdfIn PDF document text
    • http://heleogose.online/49920628985hx39y.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/resumen_del_capitulo_6_de_el_principe_de_la_niebla.pdfIn PDF document text
    • http://detonicro.website/291346030053lc1e.pdfIn PDF document text
    • https://cdn.sqhk.co/sodelaranu/DHYtjaf/zombie_running_app_iphone.pdfIn PDF document text
    • http://tafelutij.22web.org/aqa_gcse_9-_1_chemistry_textbook_answers.pdfIn PDF document text
    • http://hardcreditcheck.info/44289233862o0vrr.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/geib2vI/avon_by_the_sea_restaurants.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447631/normal_5fd10bf0764bb.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/risitoxe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gokobuvutojo.epizy.com/23922453284.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/business_communication_courses_online_india.pdfIn PDF document text
    • http://monudoxufanexax.rf.gd/zirijolazefasuwudimebanej.pdfIn PDF document text
    • http://minofadejewezup.rf.gd/emoticons_facebook_en.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_off0000e042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE042 5360 bytes
SHA-256: 8a8cb0fee00ffde9a119c8140302492afcd863d06d97f22c3bd054c7b94fa8b1
font_01_sfnt_off0000f263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF263 10180 bytes
SHA-256: be9c223b874768742dc0d3c43f04c112db023d18ef67935548bf15a679d80406