Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddb8afe6d937b37…

MALICIOUS

PDF

69.1 KB Created: 2021-03-01 00:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: be79a43d2efee1856fdc26775d35c6db SHA-1: aa5d490739bab946600399da5a86151f5344970d SHA-256: 3ddb8afe6d937b37b0f89f0d73426bf2aa7692a0b4bb1cd5e1b432a006896a40
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://mezovuduw.ru/award?keyword=air+india+baggage+weight+limit PDF link annotation
    • https://cdn.sqhk.co/xexisini/hg3hh4C/najonakomatafewi.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/fijjhhg/free_download_motogp_games_for_pc_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/fibnohe/door_kickers_2_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/8RRijaw/the_maxx_comic_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/sojowidaz/wIigDgf/mosquito_repellent_sound_mp3.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/rafazafawexifideti1fhmy.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/if88GUR/occupational_health_services_portsmouth_nh.pdfIn PDF document text
    • http://mynasert.online/9036461699clp0g.pdfIn PDF document text
    • http://itdiscount.info/ys_8_skill_guided6ypg.pdfIn PDF document text
    • http://susurrus.space/chamonix_tourist_guidedtnrh.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/ifgijiY/joker_wallpaper_hd_4k_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/gomuwumetixu/UpZwOZW/mame_emulator_box_apk.pdfIn PDF document text
    • https://lekinimogasujif.weebly.com/uploads/1/3/0/7/130739945/6839789.pdfIn PDF document text
    • http://contentmedialiteracy.com/craft_warehouse_kennewick_coupons4suqu.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/sorogamat/a_company_sells_merchandise_on_credit_for_6000.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/17356105933.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/bostitch_electric_stapler_02210_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/samsung_bd-jm63_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/fun_creative_writing_activities_for_adults.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_off0000d115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD115 5280 bytes
SHA-256: 76d65e70753078eeae81d39b5afcd6d02b789a7b165fad3fc849fa854989d66f
font_01_sfnt_off0000e2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EF 10620 bytes
SHA-256: 2529b705b3e291db524d07ded13795e791ceae0f4b560ba55160205b5f764f9b