Malicious PDF — malware analysis report

Static analysis result for SHA-256 f582808549edac57…

MALICIOUS

PDF

69.3 KB Created: 2021-02-11 03:48:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9874419411e151d783b0506e43a45058 SHA-1: 7f64f71e126e48ec7f40a67bc1756e85e8dc3c91 SHA-256: f582808549edac57fbd5edf4d1cdcb4d9f8456d0c3ffedf55210af4464758a7c
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=making%20models%20of%20ionic%20compounds%20worksheet%20answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424646/normal_600d8a8ed17c3.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/gchiaGZ/zonakozadepawafubeko.pdfIn PDF document text
    • https://cdn.sqhk.co/fularulojoze/niak838/background_among_us_lock_screen_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/5ERrM53/63609941418.pdfIn PDF document text
    • https://cdn.sqhk.co/xelajuwodaf/hjlYjbg/cars_movie_names.pdfIn PDF document text
    • https://cdn.sqhk.co/xolafunodo/Xs61YfK/roblox_voice_chat_game_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/6QSDpii/90_pop_music_hits_listen_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365662/normal_5fdeb0a0611a0.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/tJhixXW/14922655149.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/jjNiihb/disevuvokoradexafikawefoj.pdfIn PDF document text
    • https://cdn.sqhk.co/dipujabuxiw/UZDzeeM/xipidurozunupegidolove.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/lixasifasi/1580535240.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/48830776691.pdfIn PDF document text
    • http://kadowuf.epizy.com/sears_kenmore_sewing_machine_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/37991312070.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_off0000d263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD263 5728 bytes
SHA-256: 107100792004807c4994a2a258f5fe33bf592119b9622d9712a02e9cd8562298
font_01_sfnt_off0000e5dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DD 10100 bytes
SHA-256: 4110dd516ea2d80990d8b351ef107d2abd147e7315d09c4ed99762f309c717cd