Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe11ed788782da7…

MALICIOUS

PDF

77.5 KB Created: 2021-02-21 10:45:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 02fb5f8ccbb25850c93849a032cf6ee3 SHA-1: 85e26074f75351043b27f4d9e4117717db5be9ce SHA-256: efe11ed788782da73cade3b98cbb7f25437036c7d649e4fb57775ef1dc76389c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wb?keyword=how%20to%20teach%20social%20justice PDF link annotation
    • https://cdn.sqhk.co/widexerun/OhiIPhg/non_zero_vector_linear_algebra.pdfIn PDF document text
    • https://wigobozigor.weebly.com/uploads/1/3/5/3/135345973/bujisepirowomazafe.pdfIn PDF document text
    • https://xesisawizes.weebly.com/uploads/1/3/1/6/131606125/xadapadilu.pdfIn PDF document text
    • https://dulijijinigukal.weebly.com/uploads/1/3/5/2/135297200/fetubuwogizagaw-puwogejawip-veveriwam.pdfIn PDF document text
    • http://kamini33.ru/warlock_invocations_5efpasg.pdfIn PDF document text
    • https://cdn.sqhk.co/veludewozen/jdidpUm/barbie_cake_games_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jujifefa/EjjiiB1/death_killer_guarding_the_city_mod_apk.pdfIn PDF document text
    • https://labelamujevodit.weebly.com/uploads/1/3/1/6/131606697/d68f6d760f10008.pdfIn PDF document text
    • http://draiwenstore.online/brothers_mp4_video_songs_pagalworld._comxu6g8.pdfIn PDF document text
    • https://pagejenaxupiwig.weebly.com/uploads/1/3/4/3/134383440/tulawazowezu.pdfIn PDF document text
    • https://sadebisoj.weebly.com/uploads/1/3/2/3/132302749/82e3d8745a5791f.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobita/cgcONgf/seesaw_app_for_ipad.pdfIn PDF document text
    • https://wiloropijevor.weebly.com/uploads/1/3/5/2/135299547/texade.pdfIn PDF document text
    • http://stylecurtains.com/63307787735da45a.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/gigj8VL/megaconecta_phone_number.pdfIn PDF document text
    • https://karesaxu.weebly.com/uploads/1/3/5/3/135392924/zumuvudubexo_romukumojewuwas_redofawe.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/4vgjTia/pro_piano_magic_tiles_pop_songs_2.pdfIn PDF document text
    • https://cdn.sqhk.co/xogudililavo/jegehhj/murder_mystery_dinner_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26C 4920 bytes
SHA-256: c54b23f3d5d0ff3bdd67688efacfe2eee3c5ea9c84f1d3c8bef877a858a20c9e
font_01_sfnt_off00010339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10339 11084 bytes
SHA-256: 1aaf10a80d70e831fe2fec8637e49928b320746572a11ca58aef15ed7daa435f

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