Malicious PDF — malware analysis report

Static analysis result for SHA-256 c926ab1777b0998a…

MALICIOUS

PDF

74.5 KB Created: 2021-02-13 17:36:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 854088190c506ac9ce5d4c310c10ccc6 SHA-1: b6ad8b65981ba6a21395ae0e92947b83cbc708b5 SHA-256: c926ab1777b0998a703cdc2448698ca03f7779b2f73caf507210c83d2c341dc4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://seumenha.ru/123?utm_term=ouran+highschool+host+club+manga+volume+2+pdf PDF link annotation
    • http://redirunna.xyz/hypertension_guidelines_pediatrics_2017qpruo.pdfIn PDF document text
    • http://trellos.fun/48437524230qy20e.pdfIn PDF document text
    • http://kushtanash.ru/all_saints_academy_plymouth_ofsted_reportqfsp2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456999/normal_6009375fcd4e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403117/normal_6011984bd88fb.pdfIn PDF document text
    • https://cdn.sqhk.co/devepogisog/e1hhkhc/samsara_room_book_puzzle.pdfIn PDF document text
    • http://zoxifowivo.iblogger.org/mortal_kombat_armageddon_soundtrack.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/cwijjcC/sivujujijab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500440/normal_600c80d5333d2.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/Gghibif/recargado_en_ingles_como_se_escribe.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/hc4icic/boss_revolution_cheap_international_calling.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/jijhPib/download_ringtone_message_samsung_s9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421040/normal_6001c0d02b908.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zijevaru.rf.gd/25650743594.pdfIn PDF document text
    • http://fiwarirekagugen.epizy.com/totally_accurate_battle_simulator_mods_free.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_off0000e50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50C 5928 bytes
SHA-256: ecc96632f7d661f5d1036ddce62461d997b8cf07f4416f1a76055473ebaec2b5
font_01_sfnt_off0000f912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF912 10568 bytes
SHA-256: 2b38c35cf23ce9a03994a8dd2bb15ddc1fafe1d8bf386ada105b914b50296005