Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5ffeeeb4c5f479…

MALICIOUS

PDF

71.7 KB Created: 2021-02-15 12:32:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cb383404e0767c46bed5cbb5ce660a76 SHA-1: 013de939efc2c9b281d00022d76c3f1cc9296384 SHA-256: ad5ffeeeb4c5f47947a3fab7740cb1fa07170b15cfc9ae1fba19b3c2bef532b3
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=hx+effects+vs+helix+lt PDF link annotation
    • http://leaninrzpd.site/provision_for_reinstatement_cost_annual_reportxyy85.pdfIn PDF document text
    • http://cupe1.ru/world_cup_2022_qualifiers_asias14nq.pdfIn PDF document text
    • http://alisaborodaenko.design/50209701040pvly6.pdfIn PDF document text
    • http://bhd-management.space/551677645424aop3.pdfIn PDF document text
    • http://bt-management.website/56726634590t84rp.pdfIn PDF document text
    • http://matroskin.space/checks_and_balances_chart_answersndebi.pdfIn PDF document text
    • http://unlockdeals.shop/free_printable_2019_calendar_with_holidays_trinidad_and_tobago46xei.pdfIn PDF document text
    • http://copyrighthelp.info/completing_the_square_practice_problems_and_answersusb1e.pdfIn PDF document text
    • http://xonanudo.iblogger.org/tchibo_cafissimo_compact_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456712/normal_5fe0001537f2a.pdfIn PDF document text
    • http://liketsven.xyz/7511901251t8f2m.pdfIn PDF document text
    • http://sreda.city/flip_or_flop_cast_death2ucuz.pdfIn PDF document text
    • http://bettermoneytips.com/chapati_roti_video57jvq.pdfIn PDF document text
    • http://cadenalia.com/mallampalli_weather_reportmw8rb.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/gavobawum/tudakikibanatimewewafolup.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_off0000dd1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1A 4752 bytes
SHA-256: e77448b90f879bc3f88f86fe789d1b5f02e6674832fe078a09a902ffdca1fc00
font_01_sfnt_off0000ed55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED55 10748 bytes
SHA-256: baa6dcc455a588e7ad025ca4f9d9e7f474e9d05234400ed0c50c579cb921ecdb