Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcef9e28640a3657…

MALICIOUS

PDF

66.1 KB Created: 2021-02-27 01:23:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c3695c069553d47d8138e1aa36ea543f SHA-1: b5a066d9810a9562133bd06cf90027a9de23b9c5 SHA-256: fcef9e28640a36572afcd8d9bf4c19aec5f1079becf771b26a5fc3dc2b758cd2
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://yafferge.ru/wix?keyword=food+preparation+terms+crossword+puzzle+answers In PDF document text
    • https://generixa.weebly.com/uploads/1/3/5/3/135350481/nisozakebapudet-wawadeno-riwalozaxezig-tanepilud.pdfIn PDF document text
    • https://cdn.sqhk.co/zezovajav/WjiF2xO/41528713572.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459941/normal_5ff988e988055.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443624/normal_6026f077e05b5.pdfIn PDF document text
    • http://kulinar2020.site/fixidonogzj01g.pdfIn PDF document text
    • https://jodegometokak.weebly.com/uploads/1/3/1/6/131606115/zixajiwaf_jezesorumujufo_vesubet.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/WgcF7ls/hard_boiled_wonderland_og_verdens_ende.pdfIn PDF document text
    • https://cdn.sqhk.co/rozopebak/hepdBie/72528058055.pdfIn PDF document text
    • http://domastmsk.space/knaan_wavin_flag_mp3_song_free_downloaddrrwv.pdfIn PDF document text
    • https://cdn.sqhk.co/negolura/fjijbgh/sijosulirirobatupot.pdfIn PDF document text
    • http://canonsburglake.org/montreal_metro_map_2035fa97s.pdfIn PDF document text
    • http://successinyourlif.website/10999168530bh5gh.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/hd951jh/6120411931.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/he6jdjd/cartoon_racing_games_ps3.pdfIn PDF document text
    • https://cdn.sqhk.co/podizapexiv/dtjcehe/3017827706.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/dihgcjj/vilewarazisizojawon.pdfIn PDF document text
    • https://cdn.sqhk.co/forinabam/bjazhg6/doxinudoriteduxivaperow.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/YqMXRgL/34043055414.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529024/normal_6001429687d3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467979/normal_601f3276b4b84.pdfIn PDF document text
    • http://abzac.me/judevifowebinadi05duc.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/egeijMs/commuter_car_for_sale_by_owner.pdfIn PDF document text
    • https://cdn.sqhk.co/pexejaxer/YGoOefT/logo_quiz_game_answers_level_3.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_off0000c4dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4DC 5316 bytes
SHA-256: 1d1c952cfe08c657f35ccee6341194102a65d6c8b619f9dba9e6c60b6e7fa143
font_01_sfnt_off0000d6f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F3 11072 bytes
SHA-256: 399c9de973eafe21a6650b630aa455fe9089a3d54f64d05fb023032d5379ff83

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