Malicious PDF — malware analysis report

Static analysis result for SHA-256 5779c023a7f71008…

MALICIOUS

PDF

69.4 KB Created: 2021-02-12 07:42:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3a663c5dfac72029ad4e8cfd0325cf52 SHA-1: ebdea8c3bd40ac1098f8e249d7da028544243c6a SHA-256: 5779c023a7f710080b376196cd491ababba21225048fa095e85678bd7ee90917
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://bologen.ru/wix?keyword=what+food+do+chickens+eat+in+minecraft PDF link annotation
    • https://xelexezeni.weebly.com/uploads/1/3/0/7/130740222/1150520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371014/normal_6015a0b24b9bc.pdfIn PDF document text
    • https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/c625ebd9a53ff.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/nizixedupabosavapedidoxav.pdfIn PDF document text
    • http://online-sistem.site/gewimenolagifus41bm.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamujigip/6nzziai/plants_vs_zombies_free_online_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/hgFESCd/87841133494.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/igMjfvM/61057730180.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/50fbe460b41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480749/normal_5fe93ce4be480.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481828/normal_60176856bf23a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://punugituk.epizy.com/calendar_2019_october_november_december.pdfIn PDF document text
    • http://nederanunotaz.rf.gd/windows_media_player_update_song_information.pdfIn PDF document text
    • http://zopimubusa.rf.gd/16444431026.pdfIn PDF document text
    • http://vikarexazoz.rf.gd/how_to_merge_docs_together.pdfIn PDF document text
    • http://felixoxajaxev.epizy.com/jorinipadomigagaxud.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_off0000d3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D3 5304 bytes
SHA-256: a00f5d4969b87d010ad9db07d693c5b37302045950a7f30cb92c4a33fbec1b29
font_01_sfnt_off0000e5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C5 10240 bytes
SHA-256: f4262c1875890946be1fc7634c2452d689c65542b0755bd68ae9a39bd97a7954