Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae23edf8d1a9566…

MALICIOUS

PDF

69.5 KB Created: 2021-01-22 10:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e4f433e956b39d40ae6373d574db112d SHA-1: d03901e53b58d8630d65b3d031dea517c9cc3191 SHA-256: 7ae23edf8d1a9566f1866124e00356ef930f9927f00a86d6f6eaceae28a74c9d
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/wb?keyword=log%20thrower%20apk%20uptodown PDF link annotation
    • https://cdn.sqhk.co/wejagamewo/ij5gjja/battery_operated_christmas_lights_indoor.pdfIn PDF document text
    • https://site-1245817.mozfiles.com/files/1245817/39672005598.pdfIn PDF document text
    • https://site-1172155.mozfiles.com/files/1172155/94012546911.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/dictionnaire_larousse_franais_anglais_apk_cracked.pdfIn PDF document text
    • https://site-1175722.mozfiles.com/files/1175722/nature_wallpaper_images_hd_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vatepasoxi/aiNhdAu/yellow_granny_princess_scary_horror_mod.pdfIn PDF document text
    • https://site-1174029.mozfiles.com/files/1174029/stickman_warriors_super_dragon_mod_apk_hack.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493550/normal_5ff2790712ba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5fd15436db9de.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/8uheha0/korean_love_story_books_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/baxalelizop/Dljbhj4/us_monster_truck_police_robot_transformation.pdfIn PDF document text
    • https://site-1167961.mozfiles.com/files/1167961/fegofujidixovenuvug.pdfIn PDF document text
    • https://site-1230941.mozfiles.com/files/1230941/exorcist_theme_sheet_music.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xalesikejuxo.epizy.com/86908806860.pdfIn PDF document text
    • http://kapivuvarebe.rf.gd/76640693093.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_off0000d268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD268 5108 bytes
SHA-256: 82b3d071d76293d7fab96c8069f5bf0c50711cf7796543ab8ea63b0339fe5e13
font_01_sfnt_off0000e3db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DB 11032 bytes
SHA-256: 828c9b3b060e24a0fad4fffb570d3a9bd73b5bd16de6cd39fb774c12f5eab7ee