Malicious PDF — malware analysis report

Static analysis result for SHA-256 38bb269d42bedd2a…

MALICIOUS

PDF

71.3 KB Created: 2021-02-25 07:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e3589088729a766e95d11b2852fc8206 SHA-1: b7b70f9101693851efc539122ff5dc48808d29cf SHA-256: 38bb269d42bedd2a70cdaa13a3cd55497370ff8017e980881373aae5d47ff1f4
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://jacksth.ru/award?keyword=banca+internet+provincia+seguridad+bip+token PDF link annotation
    • https://cdn.sqhk.co/zevolazezag/kgh0Whb/download_city_car_driving_3d_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445736/normal_5ff19b8c50b7a.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/mibegatatupajenida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501654/normal_600bcd639031d.pdfIn PDF document text
    • http://kigurumi.org/what_to_eat_at_mcdonalds_on_keto_dietz5ssq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423430/normal_6014be498473f.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/mjd0Ygg/trivia_crack_feed_pet.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/jjj0UPj/bmw_paint_color_by_vin_number.pdfIn PDF document text
    • https://cdn.sqhk.co/vikafaselida/mMjcFgd/growth_chart_development_milestones_vaccinations.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412591/normal_600862691b929.pdfIn PDF document text
    • https://cdn.sqhk.co/wupofolizaj/Rhfiche/cheat_code_for_sims_4_money_xbox_one.pdfIn PDF document text
    • http://ogranifruit.space/what_shampoos_have_salicylic_acid_in_themy4b1i.pdfIn PDF document text
    • https://cdn.sqhk.co/xogodapap/jfMhaid/cat_s_eye_tearing_and_sneezing.pdfIn PDF document text
    • https://cdn.sqhk.co/karopepagu/gdjgchc/best_sound_effects_movies_netflix.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/musoxifuvitalo/mubugedokekor.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/11783546358.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/2784434126.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/toefl_exam_sample_questions.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_off0000da1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1B 5524 bytes
SHA-256: 9f94e15c216494a4a3880a58c0f31c140ddc71112540057459a7f2a12afe83dc
font_01_sfnt_off0000ecf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF1 10196 bytes
SHA-256: 7e856b2c3ab8510d6b2820b6b84c8c067317e147b47ff9a22349c46c67eee5a8

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