Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fdc7fe7056406c2…

MALICIOUS

PDF

78.3 KB Created: 2021-02-26 00:27:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9bc9ff4638fc01f8e52fdc3b95628f55 SHA-1: a3032522139434d390fec9fe08a8a49561dff96a SHA-256: 8fdc7fe7056406c2724e1c9f097e7752da29252ff113541b78d3bd064932b664
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://leonvi.ru/123?utm_term=past+simple+exercises+for+beginners+online PDF link annotation
    • http://cuzinfo.ru/desarrollo_humano_papalia_139yab0.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/ciiMUn6/battleheart_legacy_battlemage_build.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486197/normal_6038242858688.pdfIn PDF document text
    • http://unlockdeals.shop/child_care_subsidy_application_formqmxm3.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvexudid/c8ya8hi/82527049592.pdfIn PDF document text
    • https://cdn.sqhk.co/gatuwaven/7SgcjjF/webuwatidaxuganov.pdfIn PDF document text
    • https://cdn.sqhk.co/mekekomubun/OCjffFd/40256380073.pdfIn PDF document text
    • http://mixed-rootwork.com/microscopio_optico_compostohktif.pdfIn PDF document text
    • http://rocketdocs.us/16885955ncjoj.pdfIn PDF document text
    • https://cdn.sqhk.co/kupuvikadob/CCichaB/zurotixo.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/5114746704.pdfIn PDF document text
    • http://tehnotop.space/jewuputovazonifufaduzvdgbe.pdfIn PDF document text
    • https://cdn.sqhk.co/fatepotax/xx0OigV/jarewobenapamida.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/jpjdlXo/midtown_crazy_race_pro_apk.pdfIn PDF document text
    • http://twobigs.space/46599339357tv7fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikubub.onlinewebshop.net/hp_photosmart_c7280_service_manual.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/troy_bilt_tb200_manual.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/ielts_writing_answer_sheet_2020.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_off0000f4ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BA 5544 bytes
SHA-256: 503580734d1adc7ee71f238ead6e10ffc0a88467ae2f8280bcee7516f68d7492
font_01_sfnt_off00010782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10782 10180 bytes
SHA-256: 063a0c47bb89428b22146d655c3f18d34e0284835a732d814e11ff02db45ac55