Malicious PDF — malware analysis report

Static analysis result for SHA-256 42cc68dfbb2ce155…

MALICIOUS

PDF

72.5 KB Created: 2021-03-11 09:28:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 92a705170d49615f5a759c31f076c94d SHA-1: a899d65f0d3ddf7af189af2712350b2b2438efe0 SHA-256: 42cc68dfbb2ce155c1423b6f0a17aa90724824380473e4a3791a1ef340f976c0
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/award?keyword=ctet+exam+2020+notification+pdf PDF link annotation
    • http://ligovezedeje.iblogger.org/economist_vk.pdfIn PDF document text
    • http://maewallace.com/rufoxelb2mlz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404980/normal_5ff8538bb5f6c.pdfIn PDF document text
    • http://phtech.site/62563480371k3ddn.pdfIn PDF document text
    • http://freshka.fun/55022691610gfqwj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5fd36c238a3a0.pdfIn PDF document text
    • http://wersita.fun/90998175112yavlu.pdfIn PDF document text
    • http://tgesheff.xyz/bangladeshi_bhawaiya_video_songe4ej5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5fed809c85000.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413345/normal_5fcf85522969a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475203/normal_6028e8cc1d14b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371509/normal_60443e0ace36e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476434/normal_60330286f21e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365656/normal_5fded401bf8bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367644/normal_5ffdd39ea58f8.pdfIn PDF document text
    • http://wofomeko.22web.org/69895642416.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gotuwun.epizy.com/alcatel_one_touch_retro_battery_life.pdfIn PDF document text
    • http://desetezovadu.epizy.com/solemewipidolisudubazer.pdfIn PDF document text
    • http://gedawov.epizy.com/betixobesonivutevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61e568f7-bde4-42d1-abc0-5003c0cae3b5/car_air_conditioning_leak_repair_cost_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4181fbca-dce0-45d4-8d6c-862b3680b058/84761135261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d4e9b4-c181-4b50-8654-bfddb7218e9c/how_to_make_dunkin_donuts_boston_cream.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_off0000df1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1E 5244 bytes
SHA-256: 20d61b0e3e977fe0bc131f785c786c0c8d14e480019db24a51ea652043471cfb
font_01_sfnt_off0000f0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F0 10532 bytes
SHA-256: 76e4d0fab1d8a5cf2e921e8f0290d2c4860dda5f5d89f08df071f9981c5aafd9

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