Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded5b93aab9f5610…

MALICIOUS

PDF

70.6 KB Created: 2021-02-24 18:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 6c5db14f0ce9dbc3e553837f52b8dd41 SHA-1: 671c6aa7a9bc3e40eb2ac90bbb4a4d7707ab5d9d SHA-256: ded5b93aab9f56103f1f2bce754617f77aa1bce03853615a4dda3338d908afa4
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://druttle.ru/award?keyword=ap+physics+c+electricity+and+magnetism+notes PDF link annotation
    • https://cdn.sqhk.co/javeduner/gcU8hg5/kisuxiva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463529/normal_600c0b13813ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378151/normal_5fc9dcf47f746.pdfIn PDF document text
    • http://construt.site/gadazesetejofovokovubu8wp6z.pdfIn PDF document text
    • http://dofegogojewipo.iblogger.org/bunisevemipude.pdfIn PDF document text
    • https://cdn.sqhk.co/xexerekija/ijaiaLH/92373420130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_60349b3f6ca05.pdfIn PDF document text
    • http://zavarivaemvmeste.ru/zisepirunupekamitezasibegpt3i.pdfIn PDF document text
    • http://potenciy.xyz/oracle_sql_syntax_date_formatl2d9u.pdfIn PDF document text
    • https://cdn.sqhk.co/nitunoda/hfbqjf8/cracky_egg_easter_games.pdfIn PDF document text
    • http://obsluzhivanie-kompyuterov.moscow/sojijumubx8o4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443804/normal_5fec9c1dd4b10.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/hjTiegh/joplin_ef5_tornado_path.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381964/normal_60014b988f1d6.pdfIn PDF document text
    • http://otomail.business/account_manager_evaluation_formst430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_5fd5fdf75698e.pdfIn PDF document text
    • http://spindlndou.space/83957800364usdnq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382953/normal_601b0cae2b848.pdfIn PDF document text
    • http://floradoma.net/amc_stock_forecastd1zzf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bekisamusexasu.rf.gd/bupijolaforopaku.pdfIn PDF document text
    • http://pofiron.rf.gd/exercise_program_cards_template.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_off0000d7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C8 5576 bytes
SHA-256: 90bc8c9ff547a1f03150c8613cf330a490058a0d73d7fadfcf6f9287929c1869
font_01_sfnt_off0000eaa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA4 9920 bytes
SHA-256: fe627e3984c75d8c82f445f15e083f5d7bd4e40333fa63c7ca97af31096399d8