Malicious PDF — malware analysis report

Static analysis result for SHA-256 a866ca072b8d4661…

MALICIOUS

PDF

77.0 KB Created: 2021-02-02 12:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52c68cf9363e8141143ba97d8db20b5f SHA-1: 7158602a53a895270b8ae3c564093fba46a05e8f SHA-256: a866ca072b8d4661cc135a3ab89e1a2daf8133681ed11f46bff7c3bad95d9b84
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://maypoin.ru/wb?keyword=hill%20climb%20racing%202%20car%20stats PDF link annotation
    • https://lilonukile.weebly.com/uploads/1/3/4/7/134767916/butozumozako_kuxudapemavuvu_gigapedizobe_xagixepus.pdfIn PDF document text
    • http://love-cosmetics.shop/84242136131mmdy7.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/hbjbsje/dopifozavupo.pdfIn PDF document text
    • https://teduraxiwerul.weebly.com/uploads/1/3/2/6/132681384/9194859.pdfIn PDF document text
    • http://pokemonrivals.online/pijijekopmg7b.pdfIn PDF document text
    • https://cdn.sqhk.co/madilaxetevo/hajRThb/83181841620.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/iiiheyx/gixomopugulowumifegife.pdfIn PDF document text
    • https://cdn.sqhk.co/kerodamajop/LzgjiP6/framed_appeal_26_bmx_bike.pdfIn PDF document text
    • http://ccckkkkk.space/scanlife_barcode_qr_reader_apk3ipho.pdfIn PDF document text
    • https://cdn.sqhk.co/jebumujo/hdD2lia/glace_real_para_bolacha_receita.pdfIn PDF document text
    • https://bomupafevusoze.weebly.com/uploads/1/3/1/4/131407549/dubamogilumuji.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/tulosa/68102044294.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/ocarina_sheet_music_zelda_lullaby.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/potugevilipoke.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/73470578121.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_off0000f218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF218 5352 bytes
SHA-256: 8401b9759fe6620a84bd6394fbfbb8d5bd11fa1846e84de2f957450cb84a0b11
font_01_sfnt_off0001042e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042E 10324 bytes
SHA-256: 47093090fa6c15eb6e688f20e9e85a7285ebe185fb2710a851d72c8473de7ac8