Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b8ba875ed79909e…

MALICIOUS

PDF

71.5 KB Created: 2021-02-26 07:28:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1a69ca988f37f421ae4632aac959f023 SHA-1: 3d6b35112fb80603c02497be513f1ff939c51049 SHA-256: 5b8ba875ed79909e07a5ced90a1952a612401f9e4e6676dcbeec22248d3731ac
126 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
  • 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://leonvi.ru/wix?keyword=solving+one+step+equations+with+fractions+and+decimals+answers PDF link annotation
    • http://mavigawika.scienceontheweb.net/12046144017.pdfIn PDF document text
    • http://borejukeluteva.mygamesonline.org/which_country_provides_the_most_foreign_aid.pdfIn PDF document text
    • http://wewogokuwidu.mywebcommunity.org/the_decisive_moment_by_henri_cartier-bresson.pdfIn PDF document text
    • http://dizurexemubegog.mygamesonline.org/42579772641.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444875/normal_5ff671bb7bdb9.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/z_score_table_calculator.pdfIn PDF document text
    • http://fukazab.mywebcommunity.org/51134523086.pdfIn PDF document text
    • https://cdn.sqhk.co/bisidilit/Yica2KX/old_school_r_b_music_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/femelofep/ShcK9Yy/gunabupusejivituvo.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/efM4KkQ/super_text_twist_2_free_online.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/what_are_the_hero_ranks_in_one_punch_man.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jomovexujufadi.epizy.com/itc_bookman_font_family_free.pdfIn PDF document text
    • http://totofexux.epizy.com/protection_paladin_leveling_guide_classic.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_off0000d757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD757 5952 bytes
SHA-256: a02261881562e1a53fa5198e2eac1f53b77e482a3eeac1dbf254bfe1402b4b56
font_01_sfnt_off0000eb85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB85 10840 bytes
SHA-256: f2d11434605ad4f0f049cb23163c29f923359fc7070be4b9059c813ed2734e0e