Malicious PDF — malware analysis report

Static analysis result for SHA-256 4804fb6b80c80cc3…

MALICIOUS

PDF

71.7 KB Created: 2021-02-21 01:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ca1e39b57a15d66ea020c4dc6c47709f SHA-1: a225b3bba1ed95281e6064c7dcc1533fc7f9cb9e SHA-256: 4804fb6b80c80cc31bcdbd2bbc42298f21d6f668a1c1dda0d13c12697ff6060d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=como+fue+destruida+la+iglesia+de+efeso PDF link annotation
    • http://optarfes.com/vetujifawukiticsd8t.pdfIn PDF document text
    • https://cdn.sqhk.co/luwivimexu/iifhcqs/97711504069.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5feb2586ce87c.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/jd7hjig/ben_10_alien_swarm_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/dilipokoje/hjZhijg/rome_total_war_2_unit_size_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411926/normal_6001bcaecf74d.pdfIn PDF document text
    • https://cdn.sqhk.co/sebelokili/Pjdjfid/legacy_golf_course_phoenix_real_estate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386361/normal_602c91b56f494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495058/normal_5fe6a41db2143.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/jbFgiQY/kiravigevozutimukupu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463559/normal_5fe6fe0a3a451.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462775/normal_5ff1b9d8caf27.pdfIn PDF document text
    • https://cdn.sqhk.co/fivodewile/hg13uPJ/slide_away_lyrics_miley_cyrus_traducida.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383704/normal_5fde12a1859d3.pdfIn PDF document text
    • http://yachts-4-sale.com/pakebusowisasaninurubebe2fs8r.pdfIn PDF document text
    • http://shopbest.online/best_tablet_for_reading_booksjlaue.pdfIn PDF document text
    • http://whysmall.space/ielts_academic_reading_skills5ykq4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419828/normal_5feb60e48f0b0.pdfIn PDF document text
    • https://cdn.sqhk.co/lawikuto/dphinje/17375480132.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401994/normal_5feea8123197d.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/risisipajole/tokyo_ghoul_re_kaneki_returns.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/number_flash_cards_free.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_off0000d8bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BB 5132 bytes
SHA-256: 0ced022e6f7d12cace35ad8f6d540218e2aa7f1baa5ce5b7e26cd7d061cf316c
font_01_sfnt_off0000ea19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA19 11728 bytes
SHA-256: 9c9668c11228bae8b07ce1640d523b9f5e341bab1e24ce4571c1a3f877e04454

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