Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af923ed67e78fb2…

MALICIOUS

PDF

72.7 KB Created: 2021-02-26 18:19:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2f27c7262219b695c233ab3bdc4592ad SHA-1: d0840f3c5e682bebb85faaa1430b894ade3d6755 SHA-256: 9af923ed67e78fb29c8b283197e40a7ca0815db67264d7d900fd47f3098f78ec
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://druttle.ru/award?keyword=troy+bilt+3550+watt+generator+specs PDF link annotation
    • http://zawugudumi.getenjoyment.net/demisuvolowaje.pdfIn PDF document text
    • http://linudanozuno.iblogger.org/forscan_spreadsheet_2017_f350.pdfIn PDF document text
    • https://cdn.sqhk.co/tumozaraf/hfaocjj/wedding_cake_designer_online.pdfIn PDF document text
    • http://kelirajisob.66ghz.com/xekenowosipebigikagadeba.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/0gjhjdu/how_to_catch_ultra_beasts_in_pokemon_sword.pdfIn PDF document text
    • https://rejukikigukaw.weebly.com/uploads/1/3/5/3/135387704/8434885.pdfIn PDF document text
    • http://mavavuvew.22web.org/black_and_decker_flavor_scenter_steamer_plus_instructions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489977/normal_601e72bc54b89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485457/normal_5fe0a95d43bb7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495691/normal_5fc865e4912bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rejazimuperolik.rf.gd/android_developer_pay_in_pakistan.pdfIn PDF document text
    • http://fiwofitobuz.rf.gd/43303960549.pdfIn PDF document text
    • http://zemikajinemoxi.rf.gd/caracteristicas_politicas_del_modo_de_produccion_primitivo.pdfIn PDF document text
    • http://robavumu.rf.gd/dow_engage_data_sheet.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_off0000dcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC3 5812 bytes
SHA-256: 4ef89efb2b037d5ffe73e17bf383ac40a1526eb2d36077f7e18a1d9702cb6d30
font_01_sfnt_off0000f0b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B9 10756 bytes
SHA-256: ffee6ef7cf23b62d0290eedffb613a205e19114b964c2d1b7c0dfd72d0b09e1e