Malicious PDF — malware analysis report

Static analysis result for SHA-256 507a1aa3884a4d2e…

MALICIOUS

PDF

72.6 KB Created: 2021-02-28 19:54:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9b473e78752ca6b16d99598628f217c8 SHA-1: 4eba52692a8bc01e06fa5f68ba1ca82369d42387 SHA-256: 507a1aa3884a4d2e3af73f0e3e2f818bf9ef33668fad183a76a7df83c1fe6f8a
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://soxebez.ru/award?keyword=how+to+calculate+difficulty+index+in+excel PDF link annotation
    • http://gagitevanonuti.mywebcommunity.org/final_fantasy_vii_remake_ps5_60fps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459321/normal_6037de4da9a55.pdfIn PDF document text
    • https://zorajifedimak.weebly.com/uploads/1/3/1/4/131437130/vesijiviniwatu_dulolevu.pdfIn PDF document text
    • http://lazotub.mywebcommunity.org/jawosaxusepenabigi.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/longest_research_paper_ever_written.pdfIn PDF document text
    • http://gudelew.mywebcommunity.org/41952653522.pdfIn PDF document text
    • https://dafubadam.weebly.com/uploads/1/3/0/8/130874240/nodivuvo_zakexob_savanos_luroxovur.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/wugigebere.pdfIn PDF document text
    • https://mabosuvix.weebly.com/uploads/1/3/4/8/134851695/wogoneguj-jepurebexivo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466376/normal_60141ec4df7cc.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/konosuba_volume_10_synopsis.pdfIn PDF document text
    • http://wititabeg.22web.org/lemek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503214/normal_5fc6b902bbd82.pdfIn PDF document text
    • http://sinoxaju.mygamesonline.org/how_to_create_simple_macro_in_excel_2016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sokivuj.epizy.com/gebepoz.pdfIn PDF document text
    • http://sisizovomejefi.epizy.com/social_media_marketing_industry_report_2020.pdfIn PDF document text
    • http://zipemoluligera.myartsonline.com/how_to_learn_dental_work_cost.pdfIn PDF document text
    • http://gisinazujawapub.epizy.com/pafaxowelebanixo.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/63851130674.pdfIn PDF document text
    • http://kakogajoxe.epizy.com/56627646331.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_off0000e022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE022 4964 bytes
SHA-256: 7e0743330688d36fc6c433c8fd8e5a7260238aa545276f23bc73305f76e43091
font_01_sfnt_off0000f13c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13C 10436 bytes
SHA-256: 62e4f20ef78289ddc1f6e209c7b60212ad7a92890220f910804888eaabe5bd94