Malicious PDF — malware analysis report

Static analysis result for SHA-256 b73b6dd544f4d74a…

MALICIOUS

PDF

70.6 KB Created: 2021-03-03 15:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9183b86e118a08ad74479df24af0b9e5 SHA-1: 32cf3fd5e2bb90c60a717d2b16d4dd5c5ba2d1f0 SHA-256: b73b6dd544f4d74a8247bedf747e7149a24733a7cdacdb36ed42470fff7441c2
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://botokaw.ru/award?keyword=blueprints+family+medicine+5th+edition+pdf PDF link annotation
    • http://wspring.space/scaled_agile_epic_template99vpm.pdfIn PDF document text
    • http://tuxiwos.iblogger.org/condolence_letter_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453102/normal_5fd38637f3152.pdfIn PDF document text
    • https://cdn.sqhk.co/zugeketinog/7g5jhii/mlb_2020_season_wild_card_standings.pdfIn PDF document text
    • http://it50life.pro/anti_ragging_form_du_2019bdnw4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_600b4ec5b8049.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/aDnITid/fashion_story_game_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393503/normal_5fd0eae236ecf.pdfIn PDF document text
    • http://citruss.space/music_notes_clipart_transparentpn0vg.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/97024933140.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384463/normal_5ff6326e631be.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/GfTrugc/scrap_metal_copper_prices_mn.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/logocentrism_for_dummies.pdfIn PDF document text
    • http://monoga.space/bose_solo_5_universal_remote_manualca7jv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vujapoguxesak.myartsonline.com/95621734198.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/tosolepubuza.pdfIn PDF document text
    • http://wupepiwora.rf.gd/tirixiluwifiw.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/15856441667.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/vipuboze.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_off0000d4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AB 5672 bytes
SHA-256: 28e3715ba36bdbe0e615b05118b0e382f980303532cf5c1e65c75c8fd19db66b
font_01_sfnt_off0000e7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D8 10952 bytes
SHA-256: a839a352ecdefc40fc1460423fec7c9ceb995b42502be3871c448f493e5fd566