Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f988e47f0be01e8…

MALICIOUS

PDF

75.5 KB Created: 2021-03-07 02:45:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dd6bedf6bfed24054f5404ca6edc8c43 SHA-1: 0a00a969181ff89cfddeeb2a9b972d8c57843bb9 SHA-256: 5f988e47f0be01e815bb64aa18de97c9b71be08ddc0ce7a0a9ab63a6dff6c648
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/award?keyword=what+is+a+mythical+female+monster+called PDF link annotation
    • https://cdn.sqhk.co/lilaxikixo/gcohfgf/robo_shark_movie_cast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409614/normal_5fdbec8553be1.pdfIn PDF document text
    • https://cdn.sqhk.co/buzaxelubot/zgfhjgd/plain_city_elementary_bell_schedule.pdfIn PDF document text
    • https://serawododi.weebly.com/uploads/1/3/4/8/134885696/nuxizu.pdfIn PDF document text
    • https://foseludi.weebly.com/uploads/1/3/4/5/134592848/2532695.pdfIn PDF document text
    • https://cdn.sqhk.co/wareberefiz/dhUFhjA/bingo_musical_por_zoom.pdfIn PDF document text
    • https://wunurobi.weebly.com/uploads/1/3/4/8/134881210/3945429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427105/normal_600cb6592d8e1.pdfIn PDF document text
    • https://jugujepatuw.weebly.com/uploads/1/3/4/9/134900825/1b8af26f.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/sony_sa_w2500_subwoofer_manual.pdfIn PDF document text
    • http://wivevemeb.scienceontheweb.net/jofedadisixafatuzarukox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369784/normal_6020069e334bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1600f883-74af-4622-bf9a-ec1df2bed273/the_god_ask_audiobook.pdfIn PDF document text
    • http://durenifujogax.myartsonline.com/managebac_mira_loma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fade62cd-2b3f-4569-b2da-62ee52a838f5/when_has_nato_article_4_been_invoked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9193c530-b6fb-4cab-b859-b5a46e1aae0a/smart_board_software_free_download_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/160c72cb-4f73-4f7a-a8ff-29fc280d02bf/zidajufepemovalibaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c3e6dc0-8729-461b-86d3-f6fa226d1139/85122741926.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_off0000eb1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1D 5376 bytes
SHA-256: 62551e19f2275b8130f39b78bdc8994cc9bbdfdb65136848c32cc01efe9f0958
font_01_sfnt_off0000fd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4E 10628 bytes
SHA-256: 00d5bea73d00cfc17e4e95b57bd15260afa160ea27e1b5679ca91f691c69d323

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