Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f280c2fe9de0781…

MALICIOUS

PDF

70.5 KB Created: 2021-02-28 21:23:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 55c6f36f245c2996afa21656e912204e SHA-1: 926f4c3b22ddd1bba7218609ce25fd179698741b SHA-256: 9f280c2fe9de0781ec00f2d8ae3ccbc3d21cc251e6f2db4d34d52260f01b4f77
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=good+morning+vietnam+full+movie+free+online PDF link annotation
    • http://zuluwana.iblogger.org/us_constitution_test_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/gederanew/2ehbyje/xuruvesepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485446/normal_603b6d335b577.pdfIn PDF document text
    • https://cdn.sqhk.co/mojuzizimu/sVhghjn/dabunifasunufivije.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465025/normal_5fd66a7b28083.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/dufojexeruxosipofedegijob.pdfIn PDF document text
    • https://cdn.sqhk.co/jadojibam/jf5CAJY/best_3d_archers.pdfIn PDF document text
    • https://cdn.sqhk.co/nezerozara/1ijhi8Y/mineral_oil_for_wood_cutting_board.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/if9wxOK/kakeponalafobobomejibofub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453740/normal_6031b60ce61f9.pdfIn PDF document text
    • http://lizanuj.22web.org/gapegepu.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/j1hiig2/90492128581.pdfIn PDF document text
    • https://cdn.sqhk.co/xedogigiloli/hsjfEiN/kegulemepezusijor.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/hfDgcgj/undateables_uk_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kubuxakul.epizy.com/40676315524.pdfIn PDF document text
    • http://lefatogilag.rf.gd/vofupalodibamupezukevitis.pdfIn PDF document text
    • http://rewifavad.epizy.com/facility_management_system_report.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/cahier_de_vacances_3eme.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/deathwatch_character_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/describe_yourself_in_3_words_answer.pdfIn PDF document text
    • http://danebusuji.onlinewebshop.net/yamaha_yas_207_review_music.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/14809044671.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_off0000d6ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6ED 5140 bytes
SHA-256: a3d8a281dd4cbd3d94a39f317454551520a0e9a2626429192639dcd657004003
font_01_sfnt_off0000e862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE862 10460 bytes
SHA-256: 03524477cbfc50d32f81c8cf39bf0d2cd16ebdf5ba5733340b482a76ad22794b

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