Malicious PDF — malware analysis report

Static analysis result for SHA-256 2051dd7b8c300e64…

MALICIOUS

PDF

72.5 KB Created: 2021-02-28 07:06:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1e2ae60033ffdfbd38ba00ad6d848784 SHA-1: 18f5007ca0cff3c4e453e263af3b424c190f2818 SHA-256: 2051dd7b8c300e64901caee159c4a37cf8035c62c9c667488bd2958b30b50b2b
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://gimoguvi.ru/award?keyword=dyson+dc35+head+disassembly PDF link annotation
    • https://mepaxojapukofu.weebly.com/uploads/1/3/4/6/134609152/tugewedogi_sumanikirewikut.pdfIn PDF document text
    • http://xoridamewok.iblogger.org/lesisukadupalet.pdfIn PDF document text
    • https://cdn.sqhk.co/nomavunut/zjajZha/denoruvonozasunezaxoxasu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462036/normal_601b02eea73bc.pdfIn PDF document text
    • https://cdn.sqhk.co/selugijibix/gfhdAIk/music_player_project_report.pdfIn PDF document text
    • https://kopuzivepepojom.weebly.com/uploads/1/3/4/3/134330145/f6b9dccec58c8.pdfIn PDF document text
    • http://lugivuwavudiwo.iblogger.org/49912005868.pdfIn PDF document text
    • https://bedejoxinen.weebly.com/uploads/1/3/1/1/131163540/efe6381110678.pdfIn PDF document text
    • https://cdn.sqhk.co/jufenakajo/ibTjeTB/20202779960.pdfIn PDF document text
    • https://wixotavu.weebly.com/uploads/1/3/4/7/134764887/6708291.pdfIn PDF document text
    • https://cdn.sqhk.co/jasamomedam/efscHii/60813904244.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bibalaluroxute.epizy.com/link_sheets_in_excel_workbook.pdfIn PDF document text
    • http://putiweg.epizy.com/can_i_use_my_phone_as_a_ps3_controller.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/android_mobile_under_3000_to_4000.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_off0000def9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF9 5612 bytes
SHA-256: 926e2d9f239b51e541f3c88c0dcb67484b1911088838fb7de82e34c1e31c851c
font_01_sfnt_off0000f1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F9 10356 bytes
SHA-256: 8f13c6d4512806fccc4d1cf0f49530584c8c2e6528363fdaac41af6f62413c41