Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8f8e8dcb4d0924…

MALICIOUS

PDF

71.8 KB Created: 2021-02-24 18:35:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2802a3f13c66aaa39b21a264284fd522 SHA-1: 5e20be55fa66e9fd01f0d5bd631e106370252e56 SHA-256: 0b8f8e8dcb4d0924be362203fd32017b2f3be41a860342a915255b2a7eabf974
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://druttle.ru/award?keyword=how+to+setup+netgear+wifi+extender+ex3700 PDF link annotation
    • http://businesslinecenter.com/gubenitugenujibamg4rw.pdfIn PDF document text
    • http://morj.space/vevor_30l_distiller_manualz8gx6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_6011d05334497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_601976fc86111.pdfIn PDF document text
    • http://shoop-fk.ru/nupazuxuxamevuzab40mx4.pdfIn PDF document text
    • https://cdn.sqhk.co/joduragenep/iaYjihg/switzerland_covid_cases_last_14_days.pdfIn PDF document text
    • http://tuderoba.getenjoyment.net/72678591049.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485939/normal_6029f32d680fe.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/too_lazy_or_too_lazy.pdfIn PDF document text
    • https://lemitixodage.weebly.com/uploads/1/3/4/8/134868200/bururobedak.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/6zgciiI/auto_auctions_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/fivodewile/bQedtjf/voice_typing_keyboard_download_apk.pdfIn PDF document text
    • https://suvewuvasalu.weebly.com/uploads/1/3/4/7/134762181/zaduluxuxe-zufenuzipi.pdfIn PDF document text
    • https://cdn.sqhk.co/zanudiwageg/BJhjahe/mojezubebinetupuvowiluwid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5fe79d020412d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://petojijoxura.onlinewebshop.net/webster_english_spanish_dictionary_online.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_off0000da08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA08 5684 bytes
SHA-256: 8cb3c6a3e2766b7d6eb621c29c1587dcdce98ecf08482fa721b502b756e984cd
font_01_sfnt_off0000ed8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8D 10504 bytes
SHA-256: 52f9b55cb0e66fc9185e47b500754bfa1d93f69b93ccd61894ff2b0f5b14b8de