Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b789840bc4be8f0…

MALICIOUS

PDF

66.0 KB Created: 2021-02-26 08:49:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 073e3cad0df0414088481a49b69a35f0 SHA-1: 8ece12fd871d89dd56b8d3b4016c19e195929885 SHA-256: 2b789840bc4be8f0a16fed527d8dc0fb6f19c4821d5147659642fbbe9b78c032
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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://crophysi.ru/award?keyword=jason+%2526+the+argonauts+movie In PDF document text
    • http://lumobumekola.getenjoyment.net/should_internet_be_capitalized.pdfIn PDF document text
    • https://cdn.sqhk.co/raguwubives/zniGhaY/ice_cream_in_a_bag_with_milk_science.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453337/normal_60249d1ce894f.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/53451591256.pdfIn PDF document text
    • https://cdn.sqhk.co/depadukat/gj7tjdl/mojodazobaru.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/13328540171.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387577/normal_5ff690c51e35a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467561/normal_600bbb5549fd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490001/normal_5fd87d0c5aa98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402944/normal_5febad5e81480.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/husqvarna_120_mk2_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408866/normal_60351b228cd1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411683/normal_5fe87559c11e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_60346d44f202d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369164/normal_5fc923aaf1abb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/best_idle_games_android_2018_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/habitats_worksheet_grade_2.pdfIn PDF document text
    • http://nitigij.rf.gd/alcatel_1_free_unlock_code.pdfIn PDF document text
    • http://duwagisu.epizy.com/information_system_support_decision_making.pdfIn PDF document text
    • http://dijilupejiba.rf.gd/shawn_mendes_imagination_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/azure_service_bus_explorer_4._0.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_off0000cb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3F 4532 bytes
SHA-256: d9c7688822983f9e94f8270220647be344dced53cc539e8e02f5e6cffc2f3b5a
font_01_sfnt_off0000dab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB0 9568 bytes
SHA-256: a483f3b9a62307763010d6a098b12a49afc39241e88c2e254718691429a955c3

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