Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89bd331d3d397a5…

MALICIOUS

PDF

71.4 KB Created: 2021-02-13 20:15:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ce25835bb5ec5d7e138b2df4b2094d87 SHA-1: 611ccea7d63d4df6764826f58739e7e053985f1e SHA-256: e89bd331d3d397a53d2389c2c7c294a0e5b5b5323cd158e28595c2039098c143
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=american+government+chapter+5+test+answers In PDF document text
    • http://item-mask.top/gabijusdmqdl.pdfIn PDF document text
    • http://jifoxife.66ghz.com/swot_analysis_written_report_example.pdfIn PDF document text
    • http://coolvdomaion.online/67_mustang_auto_to_manual_conversionp01bd.pdfIn PDF document text
    • http://tikovg.xyz/xilutupurisozidabusamajauzhhm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374857/normal_5ff402a0c101c.pdfIn PDF document text
    • http://good-production9.site/ejercicios_de_gramatica_ingles_1_eso7itui.pdfIn PDF document text
    • http://supanigavig.iblogger.org/instagram_followers_apk_app.pdfIn PDF document text
    • http://copyright-securityx.com/les_formes_de_phrases_cm254zh2.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/referat_abatere_disciplinara_angajatfdpnc.pdfIn PDF document text
    • http://mini-cam1.club/reported_speech_sentences_and_questionsdjbt8.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://babupit.epizy.com/15129062742.pdfIn PDF document text
    • http://lubuzozerewa.rf.gd/dajamokudizimam.pdfIn PDF document text
    • http://taxowojo.epizy.com/government_employment_card_application_form.pdfIn PDF document text
    • http://fogosise.rf.gd/filemaker_templates_job_tracking.pdfIn PDF document text
    • http://wurunuj.epizy.com/esl_family_worksheet.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_off0000cce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE9 5368 bytes
SHA-256: 428d78c7514a5829267c3411fbbdcfb8209d66d47a6e5c7295447de856fcbdc8
font_01_sfnt_off0000df07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF07 10220 bytes
SHA-256: 86f3fa483b1ad90e064fcca010114581c4342390c35736192fc9a7bae27bbaff
font_02_sfnt_off000101f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378