Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93ceaf6b5845a79…

MALICIOUS

PDF

64.1 KB Created: 2021-02-17 10:10:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 43ac770b3d1214017d4fa6891280c179 SHA-1: 5c22c23da8ab979356681de48efa38b6dce681fc SHA-256: c93ceaf6b5845a793aca69d81134125da3dbcf27c61121670b7c00e33709ada3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=compound+word+worksheets PDF link annotation
    • http://just-gopro.com/5608637372pdmdx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456998/normal_600a202e96d75.pdfIn PDF document text
    • http://hopecommunitynaz.com/58280441439v3shy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409123/normal_5fc601b4e70c8.pdfIn PDF document text
    • http://about-igsupport.com/dojupivixuvijurubokaw5jrv8.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/gcjfjj9/cross_stitch_thread_organiser.pdfIn PDF document text
    • http://b0xberry.online/10844619200b5r1x.pdfIn PDF document text
    • https://cdn.sqhk.co/xojafimib/4jcptif/fakapisofixip.pdfIn PDF document text
    • https://cdn.sqhk.co/widafopaj/ji8Tv1s/2020_farm_show_toys.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/rmuS9jf/youtube_r_b_music_videos_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/kxicShd/real_boxing_2_creed_mod_apk_latest.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/jezekemunidup/feasibility_report_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/letapixo.pdfIn PDF document text
    • http://lojuvep.epizy.com/24285549386.pdfIn PDF document text
    • http://bidexegope.epizy.com/movies_tamil_padam_ing.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_off0000c0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0CF 5016 bytes
SHA-256: 561b6a9f33bc432c3bba2b8c0ff966bdfe43f39690b7e6c85230b3c1582ebd5c
font_01_sfnt_off0000d1c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C4 10040 bytes
SHA-256: a658399c94964535d4371b47f24a25289495c14f200eeb13f2fe12c549869336