Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aedc9ba45c97773…

MALICIOUS

PDF

74.0 KB Created: 2021-02-23 11:46:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a402f967dff186f9719772c4dbe5809d SHA-1: e4a6d48bf9932afe9038854c280727c4bee30f2b SHA-256: 6aedc9ba45c9777367a08dc0d9ef83478cbd3d028dc541179c282b34a3878817
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/strik?utm_term=how+to+replace+chamberlain+battery PDF link annotation
    • https://cdn.sqhk.co/radojiga/lsBiicI/wumelosenisilovinujaguza.pdfIn PDF document text
    • https://cdn.sqhk.co/juzosugun/7Iahhe9/robocar_poli_space_monster_popular_games.pdfIn PDF document text
    • http://xajotupefaku.22web.org/wefeluponatanusojinasatu.pdfIn PDF document text
    • https://mazaxijav.weebly.com/uploads/1/3/4/4/134488449/senimezuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/iecoDif/positive_snowball_effect_definition_psychology.pdfIn PDF document text
    • http://mujojodisi.22web.org/asana_board_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/mamabukalom/ifgijjm/sedekulebebivu.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/idhijeo/vikings_invade_england_timeline.pdfIn PDF document text
    • http://lofomerevudawem.iblogger.org/wedding_thank_you_speech_template_singapore.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/3hcX6XS/pepubasi.pdfIn PDF document text
    • https://cdn.sqhk.co/wobimore/e0VBdYo/alchemy_definition_spiritual.pdfIn PDF document text
    • http://nevozepamuj.iblogger.org/dorukeziko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xogonat.epizy.com/riparasezutuludojoralan.pdfIn PDF document text
    • http://favigagiwu.epizy.com/acog_guidelines_for_severe_preeclampsia.pdfIn PDF document text
    • http://xerifuxedu.rf.gd/kobuzinuxaj.pdfIn PDF document text
    • http://dijinisefiregot.rf.gd/reading_comprehension_worksheets_for_grade_7.pdfIn PDF document text
    • http://vaxesopubowutuf.rf.gd/50500655869.pdfIn PDF document text
    • http://miviguwi.epizy.com/hinkhoj_dictionary_for_pc_windows_7.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_off0000e194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE194 5292 bytes
SHA-256: c205f2a1c561130543b871975e827a07b55b03fa2cf15537908365907ad3e536
font_01_sfnt_off0000f378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF378 11556 bytes
SHA-256: 0111d4b519d17cd6432a151ef209497011534dd711611611886b9ef7dae01064