Malicious PDF — malware analysis report

Static analysis result for SHA-256 4443ad41d39b16e8…

MALICIOUS

PDF

72.6 KB Created: 2021-03-06 14:20:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6153df24fa6779d3f1e93aad9d21a723 SHA-1: 21a899a093fb7df3e400e4de7be8c3ac9162c20f SHA-256: 4443ad41d39b16e8035b93ff33a7ac8de5ae2f8eb36239501706297175d9383f
186 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/award?keyword=05+jeep+grand+cherokee+headlight+assembly+removal PDF link annotation
    • http://vifezitenof.getenjoyment.net/bissell_lift_off_multicyclonic_pet_vacuum_filters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370777/normal_5fc831ea2c29d.pdfIn PDF document text
    • https://xuxasogunoniku.weebly.com/uploads/1/3/1/8/131856570/f7680994130.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/fkYghvq/cash_master_win_real_money_and_prizes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428083/normal_5fee2efdaf9d0.pdfIn PDF document text
    • https://mugaditovamamuk.weebly.com/uploads/1/3/0/7/130776340/7033271.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/h5gitZM/world_war_heroes_ww2_fps_shooter.pdfIn PDF document text
    • http://good-production17.site/how_many_pages_in_harry_potter_5_us_edition6tbdw.pdfIn PDF document text
    • http://olivamebel.com/gozaxusafimofof2fh.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/dZZQjey/play_strategy_war_games_online.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/things_to_draw_easy_step_by_step_cute.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/sjdgiji/64771749689.pdfIn PDF document text
    • https://cdn.sqhk.co/dagufiwus/jiijjiK/82293867645.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/6970478.pdfIn PDF document text
    • https://rosanibo.weebly.com/uploads/1/3/4/8/134873488/zegapubanuzi-nixezuxajileku-tufowu-xatuw.pdfIn PDF document text
    • http://livethailand.fun/what_sauce_is_in_taco_bell_breakfast_crunchwrap2fghy.pdfIn PDF document text
    • https://maxegexetafes.weebly.com/uploads/1/3/1/3/131379525/33a3c241bafac63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369486/normal_601329d1c5903.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cf075d60-af7c-4c71-a16c-5c8c125a9bb7.filesusr.com/ugd/cc03df_310a3aac5abb477086b302046bacb7a2.pdf?index=trueIn PDF document text
    • https://11fe2947-f393-4df3-905d-f9f3730e834a.filesusr.com/ugd/b1b16e_682fa2f587ef473cb8079e5e5708b9da.pdf?index=trueIn PDF document text
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_c5eff275f61e49aba0f8bb1d06435322.pdf?index=trueIn 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_off0000dd36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD36 6100 bytes
SHA-256: 6355616425a93c2900c5544a63d5413f4c066b5c72acc0f828e16cf0e5eab5d6
font_01_sfnt_off0000f1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DD 10268 bytes
SHA-256: 0ca97ed8d0b83482e261e6d0f12d5699aa15fa67ad187dd19493529ee895d7fc

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