Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea5522c310516fe…

MALICIOUS

PDF

65.9 KB Created: 2021-02-12 15:14:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 603d4ef1e22e307a1a0b98a69d218699 SHA-1: 6dfa9aeaaaa272a995c7fa265fc703d590356e9f SHA-256: 6ea5522c310516fe7cb4fe852c1d30f5d60411d623c37ddfa520d2efc5d2797d
184 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
  • 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/wb?keyword=iss%20uk%20and%20ireland%20proxy%20voting%20guidelines In PDF document text
    • http://useraisins.pro/3548247226289qsy.pdfIn PDF document text
    • https://cdn.sqhk.co/sezunofubuzi/a7jfgcA/ruwonu.pdfIn PDF document text
    • https://cdn.sqhk.co/bexoninodag/ejcjchi/fukobomukugumidirinaku.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/ihTijQ1/nogigani.pdfIn PDF document text
    • https://cdn.sqhk.co/pevukoza/1gdgijc/silicone_reborn_baby_dolls_websites.pdfIn PDF document text
    • http://remontvorot24.com/most_epic_dragon_names848uc.pdfIn PDF document text
    • https://gugagefa.weebly.com/uploads/1/3/4/3/134343265/matasesunakupig-nuxeneropajex-kigavudi-kuliwofig.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/abGgdjj/mirror_glaze_cakes_compilation.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/niiiRjh/dragon_hills_golf_country_club_thailand.pdfIn PDF document text
    • https://cdn.sqhk.co/xelalizogim/fiesphf/naxetosetelerusisivob.pdfIn PDF document text
    • https://nikupotipemami.weebly.com/uploads/1/3/0/9/130969226/b90060b304.pdfIn PDF document text
    • http://tehnopolis.org/zodajatuzazukapijha2o2.pdfIn PDF document text
    • http://buylettersonline.com/foxetigodagolevuhgak3.pdfIn PDF document text
    • http://igcopyrightforhelps.com/hedwig_s_theme_orchestra_sheet_musicuf34f.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/fupanabivote/rogers_cable_tv_channel_guide_scarborough.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/kamikara_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/xukuvivoxakomiluxifudodi.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/consumer_reports_car_seats_for_toddlers.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_off0000c57e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC57E 5356 bytes
SHA-256: d0fe4565a548864138343a827d4c6cb8a451af83e322f7cbd00b41af150307cf
font_01_sfnt_off0000d7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D4 10064 bytes
SHA-256: 0d6a2ad7dd7e54ebf1891d5d0e5c82dd5c68327be3bee7252c55b3c73227861e

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