Malicious PDF — malware analysis report

Static analysis result for SHA-256 31987ca675e1731d…

MALICIOUS

PDF

69.7 KB Created: 2021-03-04 07:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3172de3a025f075b39487121b16ebee5 SHA-1: af11c078806cd33099692ac95963d98ac4cdc6fb SHA-256: 31987ca675e1731d2652fdc6760f26da308fc5c073256db4d57979236cfa3dcc
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://vilenefex.ru/wix?keyword=windsor+events+july+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368250/normal_602e6e418a974.pdfIn PDF document text
    • https://cdn.sqhk.co/fopajuxalaso/hfchfib/chicken_run_2_full_movie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387417/normal_5ff4df884fd5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467564/normal_60335fb5dd89f.pdfIn PDF document text
    • https://cdn.sqhk.co/bamosabubesi/eYjjibU/14820364249.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/gghjcvZ/27956149730.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/giwokuvuka.pdfIn PDF document text
    • http://folejaf.mypressonline.com/pabaxegogobuket.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410002/normal_6019d4e72a545.pdfIn PDF document text
    • http://tejidirexe.mywebcommunity.org/zivokakinuzamivagum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464521/normal_5fd843a0389ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418963/normal_6028ab244d6d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370066/normal_600615db43de0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483856/normal_6015af0fd55f1.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/73245484169.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445880/normal_6025b57c1b20c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413983/normal_600b8c73eabde.pdfIn PDF document text
    • https://cdn.sqhk.co/gotulurowav/jPFghw6/virtual_sim_story_dream_life_download.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/what_are_three_good_things_to_say_about_yourself_in_an_interview.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d57e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57E 5132 bytes
SHA-256: f6fb833c2fe546ea7e84587b2937b270fb54723edeb024d9fc2b005d2c3b5e7b
font_01_sfnt_off0000e722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE722 10124 bytes
SHA-256: a3b00ac79efa1f2fafb50956658796c8e6904b32719a56c8d79cc4ffe2184794