Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a23bc6a7b27676…

MALICIOUS

PDF

68.1 KB Created: 2021-02-05 09:59:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0fff909f6c17ececda740edfef761ce0 SHA-1: 2c9b55b8100d2b7a2befdeb578211abb09fde2c1 SHA-256: 73a23bc6a7b276769ace6b7abec17401db55aa2e16f7bfd832574c66f2e98599
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=alpinia%20malaccensis%20information PDF link annotation
    • https://cdn.sqhk.co/dixufeja/z49Rict/gangster_city_war_arenas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424953/normal_5ff49ce95c3a3.pdfIn PDF document text
    • http://dfds.in/kabeguxutural1sy9.pdfIn PDF document text
    • http://tumbochka.space/4102335291890wps.pdfIn PDF document text
    • https://cdn.sqhk.co/nepofigiper/ji9AgjB/sisuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407087/normal_5fecd208b5f19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459174/normal_5fd654e568c4a.pdfIn PDF document text
    • http://dream-stat.ru/40258282276eoxp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368950/normal_5ffaeb61b9a64.pdfIn PDF document text
    • http://istlan.space/ma_permit_test_questions_and_answersp0ozp.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/heMCgjc/fashion_story_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/gugapedulob/iiRhjZT/65171597615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411919/normal_600db7f03404c.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/fajujiju/jezinukosakesugelar.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/89325137699.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_off0000ce90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE90 5152 bytes
SHA-256: 14d73dd701ae4ece71d96d5b8ab2aedef23c6213f32bb867ec1da7cab4b82c91
font_01_sfnt_off0000dffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFC 10412 bytes
SHA-256: 13b250dbd4db503dc2c069b14c7b963fda68433ea16d95bdd9a0b42e69c97e7b