Malicious PDF — malware analysis report

Static analysis result for SHA-256 3826b07727722893…

MALICIOUS

PDF

70.2 KB Created: 2021-02-26 23:41:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 15d83e6e11ece210583af1048edbd439 SHA-1: 379fe935138a632b976599499f7428378dd87a04 SHA-256: 3826b07727722893f84c0c26c61437fb4562b2cc1a4f1d6b7abc27f4be04dd17
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://midufefew.ru/award?keyword=million+dollar+consulting+proposals PDF link annotation
    • http://jedomagisuw.getenjoyment.net/64605898956.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413119/normal_5ffe90dfa37cb.pdfIn PDF document text
    • http://kifikawi.66ghz.com/reading_fluency_worksheets_2nd_grade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424666/normal_5fd1fc747467e.pdfIn PDF document text
    • https://cdn.sqhk.co/jagibuvat/ibgiDku/42155968354.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/jdXcjdA/best_deals_on_ipads_right_now.pdfIn PDF document text
    • http://shimano-stradic.ru/masterminds_4th_bookvbmfx.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/TidheMR/vr_games_play_store.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jitabemap.rf.gd/atomos_ninja_2_manual.pdfIn PDF document text
    • http://kemeterotef.rf.gd/is_shell_ethanol_free.pdfIn PDF document text
    • http://genigasoferu.rf.gd/why_does_rachel_not_wear_a_bra_in_friends.pdfIn PDF document text
    • http://bikumekomem.epizy.com/addition_of_dissimilar_fractions_worksheets_grade_4.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_off0000d458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD458 5248 bytes
SHA-256: f75a8f80766fa4343971d4ca840495ac7c4ef5ce28b4b12ba4d906940ab8d9ad
font_01_sfnt_off0000e645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE645 10824 bytes
SHA-256: cddb8548c81adf7441a52bed76a0cb68ae514959c13720a924f67eadd9e60ca9

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