Malicious PDF — malware analysis report

Static analysis result for SHA-256 220e6d59f24e51c7…

MALICIOUS

PDF

71.7 KB Created: 2021-02-15 12:01:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e3646c6bbea686f978ca7897cf7bcf10 SHA-1: 9f50e478aeb557a7dfd2137bfd65ebf262f42ed9 SHA-256: 220e6d59f24e51c7aa1518a220ce89e1fefe4afb284f0e70a83504d38953fcf2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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=math+4+today+grade+5+answer+key+pdf In PDF document text
    • https://cdn.sqhk.co/gipirukanut/jhU6SLH/fawukafabu.pdfIn PDF document text
    • http://kpovli.ru/botw_horn_shardsp4hyc.pdfIn PDF document text
    • http://starkrobotics.org/football_betting_strategy_soccervista57p0x.pdfIn PDF document text
    • https://cdn.sqhk.co/momogajopi/Dgfhajj/43884785750.pdfIn PDF document text
    • https://cdn.sqhk.co/mebereserab/aBAzigN/beat_the_boss_3_hacks.pdfIn PDF document text
    • https://wuporebepumi.weebly.com/uploads/1/3/5/9/135981990/selijiberomu-gudewefa.pdfIn PDF document text
    • https://zesakexe.weebly.com/uploads/1/3/5/3/135314388/gumona-fixunekipaj-zavabet.pdfIn PDF document text
    • https://mozovarowojexi.weebly.com/uploads/1/3/4/8/134867055/jifimetuzodevosu.pdfIn PDF document text
    • https://wekupadafar.weebly.com/uploads/1/3/5/3/135315244/riliboponeme-dipobo-bomexubat-xerokixema.pdfIn PDF document text
    • https://sebipujo.weebly.com/uploads/1/3/5/2/135294987/558f6.pdfIn PDF document text
    • https://lerofiputa.weebly.com/uploads/1/3/4/3/134367001/5652a5927d.pdfIn PDF document text
    • https://cdn.sqhk.co/safovokon/biazDid/tip_e_tap_topolino_canzone.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/U3hikij/pebinigobubataze.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/hidghjr/jumitelidokipijakexixu.pdfIn PDF document text
    • https://relazubaw.weebly.com/uploads/1/3/5/3/135315829/korevu-tinozokumamu-gimor.pdfIn PDF document text
    • https://cdn.sqhk.co/fanabezom/FjdibGD/siwanop.pdfIn PDF document text
    • https://nifiguxo.weebly.com/uploads/1/3/1/3/131398563/4016279.pdfIn PDF document text
    • http://trysoda.pro/vojoworso7dk.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/VDGhdhb/cowboy_hat_emoji_sad.pdfIn PDF document text
    • https://cdn.sqhk.co/xudekutof/fFgdhfl/45474776550.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cda7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA7 5488 bytes
SHA-256: 2e37d4a0b1d7fd5dbcffca3c3641f79128ea3df1d651acbee5a97f589e42b4a4
font_01_sfnt_off0000e073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE073 10264 bytes
SHA-256: 00ee7492e0b4c0b82591c726bebfa7646cf19d4a0b752918c6a68e7c2bf97f13
font_02_sfnt_off000103a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A3 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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