Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7e657ee600252cf…

MALICIOUS

PDF

72.6 KB Created: 2021-02-15 11:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 36f9125d59f2a8bc3d7a9e06406df8f2 SHA-1: 4a694d5e5b0f17c22e45d48545ea291a1ff955a5 SHA-256: d7e657ee600252cfbf6844a766eff5af8c01d24c6f3d927f3c3ea8ec2e6641ee
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=applied+calculus+problems+solutions PDF link annotation
    • http://powerpoint4you.ru/begojinakaboxezazukofalo59q4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_601976ec0858b.pdfIn PDF document text
    • http://dazomasuw.22web.org/bizurekuxagidup.pdfIn PDF document text
    • http://sberpodarok2020.online/rifawivogumuporukhgtsj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463286/normal_5fca91e1a09f8.pdfIn PDF document text
    • http://vijofogozorumi.22web.org/aligarh_muslim_university_date_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481819/normal_5fd95e2d6d072.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453532/normal_5ff370b077f65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489595/normal_5fde745bdee8e.pdfIn PDF document text
    • http://vulomufukuvi.22web.org/hollywood_movies_in_hd_sites.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497344/normal_5fcaa878875bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jeputujakajaj.epizy.com/neuron_structure_and_function_worksheet.pdfIn PDF document text
    • http://zumewozuzetarun.epizy.com/beatles_karaoke_songs_free.pdfIn PDF document text
    • http://xavisijividefo.epizy.com/zonomog.pdfIn PDF document text
    • http://rebukupomapet.rf.gd/vocabulaire_anglais_francais.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_off0000def0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF0 5348 bytes
SHA-256: cf97b8736be05c445f0eee58bb56981b7322285841c465e72d5024aa655fd3dd
font_01_sfnt_off0000f0fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FE 10788 bytes
SHA-256: 1c2f0b7b1663d2e02d558471e2094ff95ccdcc5788e937e8bbb44c9039041aec