Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63833ba3b9c9278…

MALICIOUS

PDF

66.9 KB Created: 2021-03-10 01:51:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8fb5a3c82c62269d61f23a87d8bf81eb SHA-1: 59072f2139195830d6971e71e0555ae30a108c25 SHA-256: d63833ba3b9c9278a0ff1d689422e0b6d43865df146f8ba184435847e7dd2012
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=lg+tone+ultra+hbs-820s+manual In PDF document text
    • https://cdn.sqhk.co/nimotixalulo/jh1ogcp/local_bars_in_nashville_tennessee.pdfIn PDF document text
    • https://cdn.sqhk.co/rojawamusula/g7sgjji/zokise.pdfIn PDF document text
    • https://cdn.sqhk.co/wotezowedo/jbBKggb/34615122673.pdfIn PDF document text
    • http://geleostone.online/248980656710mev6.pdfIn PDF document text
    • https://cdn.sqhk.co/xolafunodo/LYhj2ib/vifaruzajogijumubunetoxub.pdfIn PDF document text
    • http://creamwalls.space/13569296321cv814.pdfIn PDF document text
    • https://wizakamulo.weebly.com/uploads/1/3/4/0/134017688/daripanexudavuguse.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/aKxHghq/the_solar_system_song_rap.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/jga31jh/66317306879.pdfIn PDF document text
    • https://cdn.sqhk.co/mesafovojifo/gdfifih/hearthstone_duels_decks_paladin.pdfIn PDF document text
    • https://cdn.sqhk.co/pibepufas/sicghgj/air_attack_2_game_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/ajjhefV/fast_lane_speed_racer.pdfIn PDF document text
    • https://cdn.sqhk.co/besiwowegin/igYgemO/forbes_magazine_customer_service.pdfIn PDF document text
    • http://vikunokanafigul.66ghz.com/craftsman_gt6000_for_sale.pdfIn PDF document text
    • https://gijepunudadolow.weebly.com/uploads/1/3/4/4/134497403/wujanixu.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/3jjgdje/82662706264.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pamajaxa.epizy.com/blend_collage_pro_app.pdfIn PDF document text
    • http://duxurajixi.rf.gd/how_to_use_devilbiss_5_liter_oxygen_concentrator.pdfIn PDF document text
    • http://setiwol.epizy.com/dinobapejebe.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_off0000c757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC757 5680 bytes
SHA-256: f4a9c218f9d8e9329392a77960f5598329897b39e836f2348ad112b9145849c2
font_01_sfnt_off0000da80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA80 10004 bytes
SHA-256: 6d16238766df7ce0c627397446bf7703177c379fb88482e367cfbcdef9096c0d