Malicious PDF — malware analysis report

Static analysis result for SHA-256 69764931fde1226d…

MALICIOUS

PDF

73.9 KB Created: 2021-02-22 07:14:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 28e79c2e66e0297dca1c3e1071928e5f SHA-1: 2ca18f93671a00d5e257d46f580d399bf54be997 SHA-256: 69764931fde1226d080445085aa7d4e008f9e289c2a096192bb2940cbeb846e0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=inspirational%20life%20stephen%20hawking%20quotes In PDF document text
    • https://static.s123-cdn-static.com/uploads/4471109/normal_5ffa877033585.pdfIn PDF document text
    • http://kismykeitio.best/45035719126zfp26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372740/normal_5ffd6e95a7553.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463551/normal_6022259a74231.pdfIn PDF document text
    • https://cdn.sqhk.co/somisafeg/haidKk2/27618312386.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxubefe/dE2qpQc/dora_saves_the_crystal_kingdom_song_2.pdfIn PDF document text
    • http://help-bluebadgecenter.com/wufebagg6az3.pdfIn PDF document text
    • https://cdn.sqhk.co/pemanunid/eih0gdO/25448389107.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413697/normal_6006276b1a196.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371267/normal_601120e63fb61.pdfIn PDF document text
    • http://rokemefofiz.iblogger.org/daily_schedule_planner_template_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/biwizalibe/agjhaic/plinko_master_download_ios.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://botasalipigu.epizy.com/nec_advanced_analytics_platform_solution_templates.pdfIn PDF document text
    • http://wopaxigaromuf.epizy.com/avast_cleanup_premium_mod_apk.pdfIn PDF document text
    • http://xinofiri.epizy.com/hse_site_inspection_report_template.pdfIn PDF document text
    • http://javewebug.epizy.com/excel_vat_invoice_template_uk.pdfIn PDF document text
    • http://noxifepa.rf.gd/fire_accident_investigation_report_sample.pdfIn PDF document text
    • http://bapomel.epizy.com/bayonetta_2_witch_trials_guide.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_off0000e493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE493 5380 bytes
SHA-256: 9e174b9054e5d68edbf9cae1b3d89a48d987fb1975c341dfe64202c2c4361636
font_01_sfnt_off0000f6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EC 10544 bytes
SHA-256: 251847952ae7fed35bda3b69fb2be41223f81211a57102374bbe1f582da742bf