Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e744548c9f5ddc…

MALICIOUS

PDF

71.8 KB Created: 2021-02-26 14:50:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 663969e4ee71a14c703cb93d090574a9 SHA-1: 070bc9233bb8ae8634696cc4b54abf33810d9c25 SHA-256: e8e744548c9f5ddca8bd1c972378944b6d6e7779b31ef367b6c5f9b6b6a7b1c1
184 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
  • 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/wix?keyword=bill+nye+do+it+yourself+science+worksheet+pdf In PDF document text
    • http://trokot-roznica.xyz/maxinaxadudadopewenokosi61owy.pdfIn PDF document text
    • http://startbastar.online/how_to_prepare_a_patient_for_an_ecgg844m.pdfIn PDF document text
    • http://gufurebu.medianewsonline.com/trimble_s6_robotic_total_station_price.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/11748983750.pdfIn PDF document text
    • http://comp-arenda.site/23209590794ctjwl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485695/normal_5ff4b5ba9296c.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/numafaweleputulog.pdfIn PDF document text
    • http://biomaniix.website/samsung_washing_machine_repair_servicebqqyx.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/tom_apostol_analytic_number_theory.pdfIn PDF document text
    • https://binemipo.weebly.com/uploads/1/3/0/8/130874238/tenafaxeduda-waromot.pdfIn PDF document text
    • https://zalivibutadugaf.weebly.com/uploads/1/3/5/3/135391941/totofa.pdfIn PDF document text
    • https://widowajezow.weebly.com/uploads/1/3/4/5/134584852/123d0ed0.pdfIn PDF document text
    • https://jesipawuba.weebly.com/uploads/1/3/0/8/130874316/3406515.pdfIn PDF document text
    • http://wonder-ita.fun/beginner_vocabulary_worksheetskyprb.pdfIn PDF document text
    • https://tinuwese.weebly.com/uploads/1/3/5/3/135300683/nibafuvudalumexivasu.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/resumen_del_cuento_llano_en_llamas_de_juan_rulfo.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://xomapagovujux.atwebpages.com/xeferufofa.pdfIn PDF document text
    • http://zupitatip.atwebpages.com/anatomy_and_physiology_coloring_workbook_answers_chapter_6_muscular_system.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/1447573050.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_off0000d013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD013 5224 bytes
SHA-256: 651e061780f194ad3f46d69e663a27f2a8a52b2aa0e16e1abee4b81df73dc9bd
font_01_sfnt_off0000e1e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E7 9856 bytes
SHA-256: 49d5a5b6bd87ccaa51c4a489ab07d54bd8225b3a58465712d1db9e427caaf75a
font_02_sfnt_off000103a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A9 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3