Malicious PDF — malware analysis report

Static analysis result for SHA-256 af42f94912de717f…

MALICIOUS

PDF

73.1 KB Created: 2021-03-01 04:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 56cd8eebef361c46a18c0bedbbb195cf SHA-1: 875bfc34c203c5ced09509215c65ee583f59322a SHA-256: af42f94912de717f3b2e56c88efb57fc910a4cbb5f39208a629c0784c1e8c64f
126 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
  • 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://dugedepap.ru/award?keyword=us+history+events+after+1865 PDF link annotation
    • https://duzozerijadid.weebly.com/uploads/1/3/4/4/134493401/zutegazu_wupadoperi_tonetivijiraxo_lujakokulun.pdfIn PDF document text
    • https://resodapiperuxa.weebly.com/uploads/1/3/1/4/131407292/5929822.pdfIn PDF document text
    • https://vomimefime.weebly.com/uploads/1/3/5/3/135316042/vugidasexenof.pdfIn PDF document text
    • http://moymagazin.xyz/vojoturuvawimifeo82un.pdfIn PDF document text
    • http://fuzubijixulux.mygamesonline.org/how_to_solve_ratio_as_a_fraction_in_simplest_form.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovusig/tthdibY/jolteon_plush_tomy.pdfIn PDF document text
    • http://dotenipago.medianewsonline.com/dovetuwisopizolox.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/pedekokitijuwugin.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/gijq1ji/saugeen_shores_winterhawks_roster_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/jgtAPhe/game_capture_xbox_one_s_1tb.pdfIn PDF document text
    • https://varepanuror.weebly.com/uploads/1/3/5/3/135394497/7201030.pdfIn PDF document text
    • http://vutisonoj.sportsontheweb.net/weider_crossbow_advantage_parts.pdfIn PDF document text
    • https://pegufozexak.weebly.com/uploads/1/3/5/3/135317465/cb9b249b4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvarijes.atwebpages.com/cards_against_humanity_online_gameplay.pdfIn PDF document text
    • http://likutolejit.onlinewebshop.net/how_much_does_it_cost_to_resurface_corian_countertops.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/tugalav.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_off0000e1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1ED 5500 bytes
SHA-256: 29ff49946f240a3c5ce32d9ce5c749dc29a7c26a63c9bdfebf394f5223ce111c
font_01_sfnt_off0000f4b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B8 10228 bytes
SHA-256: 4391521faafdce8c0dfecf2049fce3f5768473b4de9d4c41e87a2dc960b10cae