Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8efc951f428eacd…

MALICIOUS

PDF

75.6 KB Created: 2021-02-22 14:10:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6b15830b8f3284230f9098bdfc6ca475 SHA-1: 53ab4601da708f28411dd3d27dab2bbc971ab19c SHA-256: e8efc951f428eacd269ef22c98cf78ec4cdca2735b4b7d47bbdf562ddbd161ef
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://jacksth.ru/123?utm_term=how+to+learn+vba+coding+in+excel+quora PDF link annotation
    • https://cdn.sqhk.co/pabelewexo/gZhjc68/crash_car_racing_videos.pdfIn PDF document text
    • http://itash.space/47604247660jjs1s.pdfIn PDF document text
    • http://jushq.club/reporter_news_job_vacancyl8tfk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387430/normal_602b801018643.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381730/normal_601ebb28e5a48.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/fUjfigu/wetimeridifuzovililotikak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477379/normal_5fe97909a8b7b.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/rikhbhe/automatic_wallpaper_changer_app.pdfIn PDF document text
    • http://trychambre.xyz/9909601145zgwn.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/dhgPIig/nomebizepivime.pdfIn PDF document text
    • http://tradestaroffice.com/jikudatamaxznz66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465930/normal_60296938d6e7e.pdfIn PDF document text
    • http://triple-doska6.club/best_magic_animation_mods_skyrimm6yd7.pdfIn PDF document text
    • http://help-nanny.site/tablet_messenger_for_whatsappmoauk.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/kumasala/siwemosaluxemuxeminalek.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/20395922607.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/60030721724.pdfIn PDF document text
    • http://rajafebinolug.epizy.com/cement_hollow_bricks_project_report.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_off0000e69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69A 5376 bytes
SHA-256: 7fb7c2dfa1e29dda54596a2e2ab180926255d27c310b0b8f2dfb821634a7a0a1
font_01_sfnt_off0000f8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FF 12260 bytes
SHA-256: 06bf907f8e6fd6137f0a6f1e918241221b7040847909b3ad1ebf8cc55ab4256b