Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c93bc45a134f0b…

MALICIOUS

PDF

73.2 KB Created: 2021-02-12 17:42:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5da9572e53c2910745b0f5b440eb3f87 SHA-1: 1895dff6c8fc4508bd5bd498bc8a996978116a67 SHA-256: 25c93bc45a134f0b61946c562fd8d3cc839aab03bca910cfe2ec6fca64a8bd40
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=calluna%20font%20free%20%20mac PDF link annotation
    • http://rankingcoach-apps.com/17551716313pqrrm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445128/normal_5fcccc5cf0572.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/fFbThfs/zifavuj.pdfIn PDF document text
    • http://bonboxstudio.com/wibovelikagubudu3wjre.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/5fhhRib/vikings_season_3_episode_4_imdb.pdfIn PDF document text
    • http://idealslimitalia-official.site/64913790506fmst3.pdfIn PDF document text
    • http://idealica-ufficiale.site/junovoj5nxzz.pdfIn PDF document text
    • http://all-system7.club/zewubipazagejebejaradu43j10.pdfIn PDF document text
    • http://store50off.info/jurinevufapijoxadaxiniturjc88b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421767/normal_5fdbd90965a0c.pdfIn PDF document text
    • http://bupetud.xyz/lara_croft_relic_run_download_mod_apk3nzlk.pdfIn PDF document text
    • https://cdn.sqhk.co/wazikunal/9haNChd/coloring_manga_anime_cute_guy.pdfIn PDF document text
    • https://cdn.sqhk.co/bejomewuv/gdgfigl/33183010276.pdfIn PDF document text
    • http://myfirstsite.xyz/fapisekivisonow4c4t.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/roxawo/kevugemijurilatinado.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_off0000e155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE155 4752 bytes
SHA-256: 6001dfc71f677e1a1f107fec93e6fc77d8d9862f4070ced6079a68f114a5545b
font_01_sfnt_off0000f16a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16A 11344 bytes
SHA-256: d0ec1ebbe88ce4af1353087a5ee12dec4801ddcbeed8030b2aeec887ccea1add