Malicious PDF — malware analysis report

Static analysis result for SHA-256 d55c144572552b55…

MALICIOUS

PDF

70.8 KB Created: 2021-02-16 16:56:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0da1b1aee967543b5caa12e0528f4142 SHA-1: 02289be382aa7865f6648e7c9ebcfc302204c8e7 SHA-256: d55c144572552b552256e8db0cd4ac609c5d8e53ec06fa53f698c1ce3bef59c2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/wix?keyword=mw2+snipers+fortnite PDF link annotation
    • https://fumevido.weebly.com/uploads/1/3/0/8/130874276/9344704c00.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxeromewime/dgjMTjd/anime_arcade_orlando.pdfIn PDF document text
    • https://cdn.sqhk.co/nutewakizi/4Lfjb7K/service_project_ideas_for_schools.pdfIn PDF document text
    • http://gitilapen.66ghz.com/aligarh_aligarh_video.pdfIn PDF document text
    • https://cdn.sqhk.co/dowivita/e5vighd/fuzzy_fox_slippers.pdfIn PDF document text
    • http://jifoxife.66ghz.com/boiler_drum_level_control_system.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387819/normal_600562f09fd39.pdfIn PDF document text
    • http://babixuxuw.22web.org/kozukipawuj.pdfIn PDF document text
    • https://guxipalun.weebly.com/uploads/1/3/1/8/131857363/gumadiwavasoni_panolavatux.pdfIn PDF document text
    • https://sewigemebovoneb.weebly.com/uploads/1/3/3/9/133997870/357079.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/QozjdNs/rujil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462344/normal_5fdbc584477a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464851/normal_600280554ce50.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://foripoj.epizy.com/constructive_criticism_activity_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/vegas_club_performers_october_2019.pdfIn PDF document text
    • http://dosidojabar.epizy.com/53920330937.pdfIn PDF document text
    • http://papelevinijefab.rf.gd/world_economic_forum_competitiveness_report_2013.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDA 4672 bytes
SHA-256: 783a2272a650a3eb3ca07616be4db487adf43b3f76808706bb1c185d09ced793
font_01_sfnt_off0000dbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD7 10976 bytes
SHA-256: 38160c12a2f1733caf60c555d28835c96aa86447e2106aca7cde6bd813a83285
font_02_sfnt_off00010023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10023 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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