Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf6665bc6a7dbb5a…

MALICIOUS

PDF

67.7 KB Created: 2021-02-24 12:26:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dbec6b22afd21d022822ea974ae2fce3 SHA-1: 93d840b28b1ee114695e9caba72a6e2b0cb18102 SHA-256: cf6665bc6a7dbb5a351def29cfbbcf78e4c0296a3d411189bec17f1df473773b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://loloxemevo.weebly.com/uploads/1/3/0/7/130739498/somolusut_ruxobo_xuxudafow.pdf.
  • 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://jacksth.ru/wix?keyword=hublaa+liker+apk+ios PDF link annotation
    • http://cetakchantek.com/ali_omar_solid_state_physics_downloadsmt2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464707/normal_602ab25a6b84d.pdfIn PDF document text
    • http://world-wildshop.com/90286932757191xv.pdfIn PDF document text
    • http://inmyshtangen.xyz/is_waffle_house_hiring_near_meom73j.pdfIn PDF document text
    • http://sdek-24.cc/where_to_watch_christmas_carol_moviepfb6q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501201/normal_5fc611c415b6b.pdfIn PDF document text
    • http://allieshouseofhope.com/durepatufub2vk3a.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/dheh4jj/10859837797.pdfIn PDF document text
    • https://loloxemevo.weebly.com/uploads/1/3/0/7/130739498/somolusut_ruxobo_xuxudafow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491687/normal_5fd9ac5632311.pdfIn PDF document text
    • https://pimelotug.weebly.com/uploads/1/3/4/5/134576353/4bcb73efc.pdfIn PDF document text
    • http://storefromit.pro/the_dark_knight_joker_wallpaper_downloadmkyvu.pdfIn PDF document text
    • https://jorobeperepi.weebly.com/uploads/1/3/1/8/131856290/batapige_tevove_lowirenug.pdfIn PDF document text
    • http://tekplafond.xyz/tujavoxugufikonekoduruvit5r.pdfIn PDF document text
    • http://umniashka.ru/274851759200g9s3.pdfIn PDF document text
    • https://cdn.sqhk.co/kurinunuwor/iasiijj/fubunela.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/22c2931cecf551.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC731 4976 bytes
SHA-256: 939874f01c0cfc1b4f1f87562b10269d3bf061b4da63da262baaabad2804829b
font_01_sfnt_off0000d821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD821 13068 bytes
SHA-256: b5ec5747d0b53d1f6b56bd7c253376a289e4524544d702c4873cb53c36f85d5a