Malicious PDF — malware analysis report

Static analysis result for SHA-256 d943283b7fcf3774…

MALICIOUS

PDF

75.4 KB Created: 2021-02-26 02:30:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 666555aca674e3c6dbf7143523ef4b14 SHA-1: 6a93c308f2c9a042fcaeb6cf14c40da11ddedb45 SHA-256: d943283b7fcf377437155cb697dea626666551b5dabb12624acccea750a8bbd0
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://baarspo.ru/123?utm_term=bank+1+catalytic+converter+2011+gmc+acadia PDF link annotation
    • http://vaxisezawoged.scienceontheweb.net/a_member_of_the_chartered_financial_analyst_institute_cfa_must.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/fraction_decimal_percent_table_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/mDb5kig/9035104504.pdfIn PDF document text
    • https://cdn.sqhk.co/momugutatok/jikjahi/53629902890.pdfIn PDF document text
    • https://finiruxadaral.weebly.com/uploads/1/3/2/6/132680938/782624953451ebc.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/xivakirelulurumarupek.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/communion_whitley_strieber_book.pdfIn PDF document text
    • https://morekakenug.weebly.com/uploads/1/3/5/3/135335539/sanedalupa.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/tc_nova_delay_factory_reset.pdfIn PDF document text
    • https://cdn.sqhk.co/kamavedes/gjbXJgf/download_game_manga_clash_warrior_arena_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/nimabugokofa/dlicgjh/mojupawegulovidi.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/59595640937.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/pirogafa.pdfIn PDF document text
    • https://cdn.sqhk.co/gotofebelu/T2hbyZF/27725714785.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/23325316516.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/les_miserables_stage_musical_script.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xomapagovujux.atwebpages.com/21870939167.pdfIn PDF document text
    • http://rorazizaxaf.atwebpages.com/15619408101.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_off0000e78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78D 5680 bytes
SHA-256: 4265000c19ae8a354f5c65bbf83d92f2a8e70d26238e4a7bf7084f1e5fd080eb
font_01_sfnt_off0000fae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE7 10956 bytes
SHA-256: 1c89b2928cbde304a47017745d1488c0676ae1079d37eef05c3cc51cd5dbce0a

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