Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf27789a4f688397…

MALICIOUS

PDF

70.8 KB Created: 2021-02-25 07:05:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f3e8a2b4af3bb6dfe450ed2b9afce6cc SHA-1: 50eab31d49b0ca587d37e89db55df66b9b96e96a SHA-256: bf27789a4f6883971c1351265ebf9177079e4578ac76b560499e72bd8d12ed2f
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://seumenha.ru/award?keyword=acer+gaming+laptop+price+philippines+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403131/normal_60255f95dea77.pdfIn PDF document text
    • https://cdn.sqhk.co/detatakev/b3RMa8E/t_mobile_ceo_number_lookup.pdfIn PDF document text
    • https://cdn.sqhk.co/bujiwamovul/jhebkgh/98392661911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485696/normal_602e5a92c84d8.pdfIn PDF document text
    • https://kavikazu.weebly.com/uploads/1/3/5/3/135392310/gumud-mabekexe-wiwefekadedexi-kojixekusu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492257/normal_5fe793e92b45b.pdfIn PDF document text
    • https://cdn.sqhk.co/kavesake/ajh5Fjb/vopolumubexofekoferebul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465548/normal_5fc6938d1cfaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386837/normal_6011976584e36.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/wXFqgfI/password_list_generator_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wowixepis/r2ihAih/30290855353.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/wipotegadodorek/17205962142.pdfIn PDF document text
    • http://tejusadesivuti.epizy.com/wuxazafafonanudatipin.pdfIn PDF document text
    • http://mamotupot.rf.gd/ardea_real_outcome_fund_performance.pdfIn PDF document text
    • http://lawaval.rf.gd/rukolez.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/ho_babul_pyare_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/guided_red_deer_hunts_australia.pdfIn PDF document text
    • http://vitefetejovo.epizy.com/best_building_construction_book.pdfIn PDF document text
    • http://dakozel.epizy.com/business_intelligence_and_data_science.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/cactus_mccoy_2_free_for_android.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_off0000d6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F8 5608 bytes
SHA-256: 33c64fc4d30e8c02bb4bbe5b2981af868f3c8b9c6e3646d19eff76432e3208a2
font_01_sfnt_off0000e9e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E8 10532 bytes
SHA-256: 03a020eb37dc6c8c64b0b507f20a573d29d637f054c6450434e90970b1cb9554