Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a9a34d83bea8a4…

MALICIOUS

PDF

72.6 KB Created: 2021-02-25 07:55:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c33c434874afa8ee87f2ca4e31dbcc8f SHA-1: 244d2f5cdade3dffaa6fe962a070582cce0d4eaa SHA-256: c5a9a34d83bea8a4f02c8f692aca94b29a6cde25621dbd07a62154304aefbfd2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://maypoin.ru/wix?keyword=pathfinder+wolf+style PDF link annotation
    • https://cdn.sqhk.co/diwiporeb/hvFji6z/long_nails_funny_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483359/normal_5fdbe6af3b7da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376126/normal_5fe4c411b6fc7.pdfIn PDF document text
    • https://cdn.sqhk.co/bekutojeke/0hhEhak/1711172513.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/iNhjXyg/new_draw_climber_race.pdfIn PDF document text
    • http://jugatilewe.22web.org/zosin.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/maze_runner_the_death_cure_book_summary.pdfIn PDF document text
    • http://dukipor.iblogger.org/aha_guidelines_for_heart_failure_2013.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/critical_thinking_skills_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/jT8ghjg/64376738044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485321/normal_601ff1b02eb3e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gijuvaginitawaz.epizy.com/13007686296.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/how_to_prepare_for_a_home_kitchen_inspection.pdfIn PDF document text
    • http://tuzikarowom.epizy.com/accounts_payable_analytics_reports.pdfIn PDF document text
    • http://duvufewitopemaw.rf.gd/bolibunekedapepomudigo.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/62230749825.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/97769346773.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/adobe_acrobat_reader_android_chomikuj.pdfIn PDF document text
    • http://zefixufedinokas.epizy.com/deer_hunter_reloaded_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/slope_intercept_form_with_two_points_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAD 5188 bytes
SHA-256: a178b9ca2ae0133533c5136cbec92fd962423c37706880ae205729af92faea74
font_01_sfnt_off0000f164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF164 10504 bytes
SHA-256: 72dc6bc9e415c391ea187f145644f751f87c7aee6f6aa2229e29bf719b574cc3