Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d4098bc4898ccd4…

MALICIOUS

PDF

83.6 KB Created: 2021-02-23 20:17:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1cec2b73f2b4128bb76a6b62bcc195c0 SHA-1: 1015780e0bd93d909387a50180710477298a1fb5 SHA-256: 8d4098bc4898ccd41e7a3cdeb309c23df972940871fee57c49c118f45974990b
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wb?keyword=arduino%20uno%20ethernet%20shield%20tutorial PDF link annotation
    • https://cdn.sqhk.co/zabitokepum/hgjhgib/fakevo.pdfIn PDF document text
    • https://cdn.sqhk.co/divekezor/tjhd6b6/most_popular_gospel_songs_2020.pdfIn PDF document text
    • http://ifeelgood.club/starz_encore_black_east_schedule6w61p.pdfIn PDF document text
    • http://universal-kirov.ru/canli_tv_app_androide6lzf.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/uicICNL/north_star_academy_high_school_uniform.pdfIn PDF document text
    • https://cdn.sqhk.co/zapusukajev/uI4Lzjh/72059119926.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/3OijMha/cashier_3d_game.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/dudigonifu/kendo_ui_grid_popup_editor_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/tepepakefo.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/audio_player_software_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/phototropism_experiment_grade_12.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/codycross_answers_group_218.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/strategy_management_models.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/meteoradar_eu_android.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/27209493421.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/59299426014.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/best_android_tv_box_canada_kijiji.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/21430119077.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_off0001088b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088B 4904 bytes
SHA-256: 606a4bfa259e825d691ec5afe29b9b22018c178ed740f8bf0abfe0cbb96a1f18
font_01_sfnt_off0001192a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1192A 11676 bytes
SHA-256: f00b52e40a1d83d9a8fa55332db8b7f0524ca6a87c62439afce0edcc02e1a5dc