Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5f403b020b9b2b…

MALICIOUS

PDF

70.3 KB Created: 2021-02-16 17:37:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 58fe37310582b22a0a436932806ff0d6 SHA-1: 99a5f9de35a32bd628488d6c1bae4f39b0839bbf SHA-256: 5b5f403b020b9b2bb3edecaf726b04f520c88629bbdbd96fb6eca7e0a5d27b8b
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jacksth.ru/wix?keyword=the+book+thief+short+answer+questions PDF link annotation
    • https://taxurazuzar.weebly.com/uploads/1/3/4/0/134042721/1270086.pdfIn PDF document text
    • https://wekosidofanepa.weebly.com/uploads/1/3/2/6/132696212/d6ca75b8e399655.pdfIn PDF document text
    • http://viwowiziboso.22web.org/brain_tumor_powerpoint_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/wolowivem/ojfyjdi/retro8_nes_emulator_apk_1._1._12.pdfIn PDF document text
    • http://help-mediasupport.com/depulaxabutaxawasaxif48cys.pdfIn PDF document text
    • http://shoop-fm.ru/23573436709zk8y.pdfIn PDF document text
    • http://xteenware.online/27277347719mxdfl.pdfIn PDF document text
    • https://wiguvebilef.weebly.com/uploads/1/3/5/3/135389097/xetirapodekiluvenupi.pdfIn PDF document text
    • http://themarkuzmusic.com/11993515440y3lev.pdfIn PDF document text
    • https://rovorakule.weebly.com/uploads/1/3/4/7/134774255/pegokopasedepa-zemuko.pdfIn PDF document text
    • https://cdn.sqhk.co/kisereta/f0ieghD/hay_day_pop_apk_1._153.pdfIn PDF document text
    • https://vibitidit.weebly.com/uploads/1/3/4/7/134712982/fefitunibolekatofa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://revuzulikasulo.epizy.com/jadivuroxawa.pdfIn PDF document text
    • http://xuvafinuvewabek.epizy.com/mevejinasebirugitewa.pdfIn PDF document text
    • http://xusixuxoribixe.rf.gd/vocabulary_building_exercises_worksheets.pdfIn PDF document text
    • http://budokukikaririd.rf.gd/19971409550.pdfIn PDF document text
    • http://pezidojixu.rf.gd/nevada_learners_permit_test_answers.pdfIn PDF document text
    • http://petekukeseji.rf.gd/zupupibebuweriz.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_off0000d737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD737 5192 bytes
SHA-256: 96d1a8839a7038bab71a2e1d7d783962518f5b2da658564285fab887289f6332
font_01_sfnt_off0000e8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F2 10300 bytes
SHA-256: d9b3be2177c54589ac28a0ad0ef4fd9a29244b60fa38773ce5fabaf38d088a0c