Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a91d7d39696668…

MALICIOUS

PDF

70.6 KB Created: 2021-02-15 00:06:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c5e244345a40ca4a22b323357c490b95 SHA-1: 54c79e9def6ff56b01f2643c4e453e0fdf18263f SHA-256: d4a91d7d39696668eb4155b8a4b13a171bf41d4c9453021bf86d94fdfd06f075
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=parallel+apk+game+guardian PDF link annotation
    • http://quickstore.pro/tesozavifolesomokavekoxeo7285.pdfIn PDF document text
    • https://fupelesanu.weebly.com/uploads/1/3/1/6/131606305/ca82a866136.pdfIn PDF document text
    • http://inter-kalinka.ru/movie_to_gif9u9xr.pdfIn PDF document text
    • http://wow50.pro/79923229157v8bsv.pdfIn PDF document text
    • https://vabinori.weebly.com/uploads/1/3/4/3/134348027/1710165.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzagile/Xih8FWo/76593849638.pdfIn PDF document text
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/241a1b54a.pdfIn PDF document text
    • http://hydrofthol.space/ginufaretatabatirotafozee5lj5.pdfIn PDF document text
    • https://bibutijelogoper.weebly.com/uploads/1/3/2/7/132740620/nuposuxajakiba-pimodibaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380230/normal_5ffe27ec733a7.pdfIn PDF document text
    • http://topstudy.fun/alfheim_online_game_freeiof62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497372/normal_60125016f1c64.pdfIn PDF document text
    • http://bestgirl69.com/grooming_services_visual_basicmak03.pdfIn PDF document text
    • https://cdn.sqhk.co/bevurokakug/b0iahee/traffic_rider_hack_ios_apk.pdfIn PDF document text
    • http://reduslimer.website/67313187001y5922.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/1154791047435p4v.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/Ejnic0Z/18479637231.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/vuxagixil/bonokenigagobe.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/wedding_guest_list_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/denivekodirepir.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/79025576800.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_off0000d835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD835 5168 bytes
SHA-256: 62590177f7f82f126627438b3b80ce68eff5fae6022c5a9f10d560ee03f72b22
font_01_sfnt_off0000e9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 10412 bytes
SHA-256: dece86bacc43eb13bb1c7ab74c3b143280c41e5768e353966f92cab489197615