Malicious PDF — malware analysis report

Static analysis result for SHA-256 24470fc55766b817…

MALICIOUS

PDF

75.7 KB Created: 2021-02-12 12:16:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4677b3da7ee34d5f25d3a7e786bd6837 SHA-1: 3bf18458bd04418921aff566148e7025a323dfa3 SHA-256: 24470fc55766b817a39b955be04da9dfb49c60cb4dcc0afc8a2dd41074872b56
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=certificate%20of%20completion%20template%20free In PDF document text
    • http://9gusevshop.space/su_color_favorito_era_amarillo61gn1.pdfIn PDF document text
    • https://magizixulu.weebly.com/uploads/1/3/0/7/130776273/lugosadonokivutuzap.pdfIn PDF document text
    • http://makeyourself.xyz/ttgo_t_display.hjtp6k.pdfIn PDF document text
    • http://tiktokfrance.fun/limit_definition_of_derivative_worksheetm52qo.pdfIn PDF document text
    • https://rovijekamiveva.weebly.com/uploads/1/3/1/4/131437241/tukemoxow-kurosafireko.pdfIn PDF document text
    • http://covid-19online.site/43586721186chxby.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/Ethe0hh/f1_manager_2020_series_7_tips.pdfIn PDF document text
    • http://getcreditreport.info/ucr_uniform_crime_report_definition0ie87.pdfIn PDF document text
    • https://zubetotuduve.weebly.com/uploads/1/3/5/3/135340520/ladejokepamojanuneru.pdfIn PDF document text
    • http://prizinsta24.online/godaddy_wordpress_hosting_loginxqgzj.pdfIn PDF document text
    • https://bowalizixoled.weebly.com/uploads/1/3/1/8/131872289/zigegapogo.pdfIn PDF document text
    • http://samyog.ru/back_to_school_checklist_for_studentsrywfc.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/wiwamoxamo/novipobumefolu.pdfIn PDF document text
    • http://bavidatesudujig.epizy.com/12_new_syllabus_tamil_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/another_eden_beginner_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_off0000ec14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC14 4888 bytes
SHA-256: 969b8847033c0e11fe4a7e0fc6d8eb86af07d3634c61ba931e802df9d0d7aff2
font_01_sfnt_off0000fc9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9D 11008 bytes
SHA-256: f0bedc6b697320df357e80258e0e579004472648395f5a07be7fd63bfb9ceb41