Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2d50564b9e0785…

MALICIOUS

PDF

70.4 KB Created: 2021-02-26 02:24:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 159d3a0908a0a3f9df856e0fb2679b4c SHA-1: 8c7d58234349adeca1f37d64a3f9f07ce980916d SHA-256: 4c2d50564b9e0785dc01975d15f6fbf488c40c3696efa0b55e653af30777bd99
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://maypoin.ru/award?keyword=noam+chomsky+who+rules+the+world+pdf+indonesia PDF link annotation
    • http://somukegizos.66ghz.com/kudevulifowovomepomigugu.pdfIn PDF document text
    • https://cdn.sqhk.co/vutowogipu/JjgOQsC/.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuguxovim/ig1jigd/rally_house_kansas_city_royals.pdfIn PDF document text
    • http://ibkreactiva2020.com/how_much_do_counseling_psychologists_make_with_a_masters_degreep09rd.pdfIn PDF document text
    • http://lizakoku.22web.org/dufudakegetofatuxepemu.pdfIn PDF document text
    • http://websporizle4.com/cuales_son_los_sintomas_de_una_arteria_tapada_del_corazon6zk9i.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/FjhE2ji/giluretusotuluvexapum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424645/normal_600d392556094.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443344/normal_602afef0dd43b.pdfIn PDF document text
    • http://tehnotop.site/kark_seme_trkler_40_adet_mzikc2yzh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bekepijamewevo.epizy.com/immune_thrombocytopenia_treatment_guideline.pdfIn PDF document text
    • http://tubaduk.epizy.com/before_the_flood_national_geographic_worksheet.pdfIn PDF document text
    • http://robebiwasufilu.epizy.com/police_bharti_2019_online_form_date.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/65501498164.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_off0000d617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD617 5620 bytes
SHA-256: eac4650bfaf205b2d00d5b1cda540ed407b725dd6fb3fd94620479889ec671a7
font_01_sfnt_off0000e929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE929 10584 bytes
SHA-256: b9f47c9d51f9d17379b7b8a4c0f9b62dde9874a6898475f0669ffe673605757a