Malicious PDF — malware analysis report

Static analysis result for SHA-256 a059c17f7fe16e6c…

MALICIOUS

PDF

71.8 KB Created: 2021-02-11 19:44:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a90eeba73cad01e43df7f2e75e3cf5b7 SHA-1: 4fa8f331924e15df7598ccc08f0cfd13df938000 SHA-256: a059c17f7fe16e6c6cce0012a18493ba3ad8e081498a9f1c0e8a80455d1be6f8
186 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=gta+san+andreas+1.08+apk+data+zip PDF link annotation
    • http://meine-gebuhrenfrei.com/tuwinix7jgwg.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuguxovim/gijcwWL/69736784012.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/Hjagjha/67660997215.pdfIn PDF document text
    • https://cdn.sqhk.co/kisudosus/ajblihx/prison_royale_mod_apk_unlimited_money.pdfIn PDF document text
    • http://sibuvre.com/anonymous_free_vpn_for_firefox9ut8v.pdfIn PDF document text
    • https://latesadujogoxov.weebly.com/uploads/1/3/1/6/131607544/1363529.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392871/normal_6000124d0e2e3.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/eGfGjjw/android_phone_update_software_download_for_pc.pdfIn PDF document text
    • http://rubka.space/download_emulator_genplusdroidb5us0.pdfIn PDF document text
    • http://info-pages.ru/atmel_atmega16u2_datasheetvyjtg.pdfIn PDF document text
    • http://flipping-car.online/xijewiwugkoboh.pdfIn PDF document text
    • http://bossyonlinex.com/54913929537ggbud.pdfIn PDF document text
    • https://cdn.sqhk.co/bofogarabu/jbqii6L/home_assistant_integrations_yaml.pdfIn PDF document text
    • http://bnatural.space/warhammer_40k_codex_freew9b0w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jutesokom.rf.gd/mefakulaxapajozurevikiz.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_off0000dcf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF4 5484 bytes
SHA-256: a24baf55cbb7e5bd625fc9d384f9d086886e05f7fae5c28b57c2a0c0a886b8b3
font_01_sfnt_off0000efbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBF 10052 bytes
SHA-256: 157597fb7d51bfe025bb6e9f76ebd948f0a9de764c6cedc24d8f1811f2b1d6b4