Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95ff783812c5e2c…

MALICIOUS

PDF

70.6 KB Created: 2021-02-28 13:14:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ae7cf34e3f37f750a1ad4170c373e4a5 SHA-1: 9e595438a5c673c89faaa824b730bbf250a5db57 SHA-256: b95ff783812c5e2cc9c9f68f62d09bbe281889c478875f8630246a0ddeadcfcd
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://xajibur.ru/wix?keyword=virginia+consumer+direct+llc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459058/normal_6037cec4aa962.pdfIn PDF document text
    • https://cdn.sqhk.co/radageroboko/fjhFAoY/49023529110.pdfIn PDF document text
    • http://hotita.fun/fundamentals_of_game_design_ernest_adams_downloadya74t.pdfIn PDF document text
    • http://logmeinnow.xyz/fishing_tackle_box_for_catfishjm1kr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485929/normal_5ff1cc0dabb71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388842/normal_5fdd65c167a72.pdfIn PDF document text
    • https://cdn.sqhk.co/woxemumi/BhaDhdu/collaborative_post_it_notes_online.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/UUIThb0/dark_quest_2_xbox_one_review.pdfIn PDF document text
    • http://haifaiv.ru/xoxadowujijabotujh47wr.pdfIn PDF document text
    • http://miromawetibikew.mywebcommunity.org/dan_brown_books_reading_sequence.pdfIn PDF document text
    • http://pewodaz.22web.org/sazupixifojirog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jujobope.atwebpages.com/55768191594.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/ponisobuduwebej.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/la_tregua_mario_benedetti_analisis_literario.pdfIn PDF document text
    • http://zuniguvip.epizy.com/87847001334.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_off0000d7df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DF 5224 bytes
SHA-256: c3865765fd3c08137101c6a46c5fc20fea6305f57884861436381e64630a5f8e
font_01_sfnt_off0000e98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98C 10636 bytes
SHA-256: 2d1e219afe1a6ec36aebd60b83e5e38fc6b68e44d17bb49356e96e523f40ef81