Malicious PDF — malware analysis report

Static analysis result for SHA-256 633c0fab9d98054f…

MALICIOUS

PDF

67.5 KB Created: 2021-02-16 18:30:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2d6e1d50c64279ff16916f0786bf6377 SHA-1: 6fc0ed53a26d99073ab30d335d638b5db59c0cc5 SHA-256: 633c0fab9d98054f37d48b1d205c294dc517868eeb7feefcf464f5cfd867e4f9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=factoring+special+products+worksheet PDF link annotation
    • https://cdn.sqhk.co/liwewajawab/thjhe4z/xogegalagokavurajupenur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458837/normal_60107d67805b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374951/normal_5ff7fbf6c4ae2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457876/normal_5ff31478582dc.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/bV76Agg/doomsday_clicker_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/jh2HhgC/flights_to_las_vegas_from_lax.pdfIn PDF document text
    • http://zerkalo-fugicar.website/71816693127a0gc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421970/normal_600a5bd17bd43.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/jfuiabL/dominos_near_me_open_on_christmas.pdfIn PDF document text
    • https://cdn.sqhk.co/fumazuri/SZMpjgB/business_tycoon_2_game.pdfIn PDF document text
    • http://lngcliente.com/9825843706h5wwq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380079/normal_60052d3eb7b6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466661/normal_5fff956a49744.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/jopomodilamego/charles_bronson_desejo_de_matar_3.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/conjugation_worksheets_english.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/sotunowex.pdfIn PDF document text
    • http://mulunatebena.epizy.com/browser_does_not_support_video_format.pdfIn PDF document text
    • http://mutifesojare.epizy.com/java_8_stream_vs_collection_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/basic_information_on_keto_diet.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_off0000cae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE5 5444 bytes
SHA-256: fe2e665eb946b58efc0be5b97e2773a961d14ceda67df6da3f57cef86a167690
font_01_sfnt_off0000dd7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7A 10288 bytes
SHA-256: 6c408c03ddf9a3f623808138477c7068bc4ee7f618aa0a503472174bab71143d