Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc8a469fd226f8d4…

MALICIOUS

PDF

65.7 KB Created: 2021-02-26 22:51:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7845869177a37e6d991b26a4dd9bc8f7 SHA-1: 2b8bf6393b3ecf2cf70e39f2484df31597c081b8 SHA-256: bc8a469fd226f8d418c6f7e084353c0eb9b2d35c29e3a7bfb8289ac8cc1f3968
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://botokaw.ru/wix?keyword=history+alive+textbook+7th+grade+the+medieval+world+and+beyond+pdf PDF link annotation
    • https://cdn.sqhk.co/vagizabibo/g3EFlBE/city_sightseeing_berlin_discount_code.pdfIn PDF document text
    • http://easylearning.space/2406433630318bix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446642/normal_5fe9634a42dc2.pdfIn PDF document text
    • https://cdn.sqhk.co/bisadidizi/ggjgdij/55761333453.pdfIn PDF document text
    • http://tekufebuxu.iblogger.org/fulolemalibimelomu.pdfIn PDF document text
    • http://bezigex.iblogger.org/aplicativo_netflix_smart_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/fezemepusap/d3fxhet/two_photo_blender_online.pdfIn PDF document text
    • https://cdn.sqhk.co/lunabati/ghgdyih/kekipevukuwuzipo.pdfIn PDF document text
    • http://wipineda.iblogger.org/rulipavudebumunenojan.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/Khhihhi/light_me_up_inside_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/sotisajen/j587fXq/nuxugime.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/iehfgdA/portal_2_mod_minecraft_pe_download.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/idMVsie/rababetukemijiwijol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fokunibilolegek.rf.gd/xigefimoxitasoxedumamos.pdfIn PDF document text
    • http://torasimi.rf.gd/49311274503.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_off0000c2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2D6 6020 bytes
SHA-256: 588ee04a4bfa1060b62a1b64eb824422de578520ba8cd536764f9c69275961d4
font_01_sfnt_off0000d74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74B 9948 bytes
SHA-256: 7e93c977cb9ae43819c913ffcf05da2d96801c3a08f99b5608a62ac4a9c4ee23