Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffff8c4a98ef79cb…

MALICIOUS

PDF

72.2 KB Created: 2021-02-27 01:34:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0350ac1e343a746d392c102632c9dc5c SHA-1: ee07a8e17695a21380477724f1df2fb2b3bd6364 SHA-256: ffff8c4a98ef79cb9270d4649d8bb5300eda1bfb2e37892cfcf42fe8f321f93f
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://xezojetit.ru/award?keyword=how+to+update+tableau+license+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404299/normal_6003b2d073927.pdfIn PDF document text
    • https://bisatabezuniv.weebly.com/uploads/1/3/1/3/131398333/dunozidetejo.pdfIn PDF document text
    • https://sufexijim.weebly.com/uploads/1/3/4/6/134679247/dbaded9.pdfIn PDF document text
    • https://litepuvib.weebly.com/uploads/1/3/4/7/134741427/172f8b009f12ce.pdfIn PDF document text
    • http://dudoguxu.22web.org/assassins_creed_valhalla_dialogue_choices_matter.pdfIn PDF document text
    • https://valetapos.weebly.com/uploads/1/3/4/2/134265584/kagonu-tewewevudufis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_602e534e963b3.pdfIn PDF document text
    • http://gejekewawe.iblogger.org/83188744288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479462/normal_601b1a9caedbd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bubeto/28445627371.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/information_literacy_questions_and_answers.pdfIn PDF document text
    • http://vulebirawesajo.rf.gd/gisokak.pdfIn PDF document text
    • http://pixagese.rf.gd/53165506092.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/32065140655.pdfIn PDF document text
    • http://voxosejak.rf.gd/free_powerpoint_cycle_diagram_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/35431678571.pdfIn PDF document text
    • http://gaxufaxurawago.epizy.com/calendar_2019_week_numbers.pdfIn PDF document text
    • http://luselobek.epizy.com/74355747266.pdfIn PDF document text
    • http://ziboporo.epizy.com/videohive_files_free.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_off0000defa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFA 5332 bytes
SHA-256: d7f38594f2a934157246762f82d4a542389c6067bde8658b441fff4593cee5f6
font_01_sfnt_off0000f13f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13F 10112 bytes
SHA-256: 32a6e88714e9912d42a028a6c68b1e4ebd2a619e3bb8a7a35971e1ed71297196