Malicious PDF — malware analysis report

Static analysis result for SHA-256 36c4c14dc8d568bf…

MALICIOUS

PDF

80.3 KB Created: 2021-03-30 06:31:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 62c08e945d567dbeea8b5c7a706420db SHA-1: 6954514fb9ef657f75d29fc11835ef7cb2ab579f SHA-256: 36c4c14dc8d568bf2ffde673457d65fad51bfb74df217af5732096a2217ebe93
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to 'https://zajinet.ru/award?keyword=nuwave+air+fryer+recipes+pdf', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'nuwave air fryer recipes pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/award?keyword=nuwave+air+fryer+recipes+pdf PDF link annotation
    • https://cdn.sqhk.co/finulepaf/iiPidhb/zombie_movie_cast_disney.pdfIn PDF document text
    • http://pedujagafena.22web.org/cargill_inc_financial_report_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/tikalijit/gXRijib/16528908934.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/v0hji9k/bird_of_paradise_plant_indoor_care.pdfIn PDF document text
    • http://nuzalozipofeven.22web.org/12064910454.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/jiYiaoA/fobijetibotalifusukafa.pdfIn PDF document text
    • https://cdn.sqhk.co/vetedaxuzele/ZheRhja/75278179899.pdfIn PDF document text
    • https://cdn.sqhk.co/neruxojus/sjiGDgd/21268149257.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/Ngvcrji/taguwuwitifiperegawazaso.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/faxaxos/gantt_chart_generator_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/noterinazesikapadu.pdfIn PDF document text
    • http://wuwedutukuw.epizy.com/braehead_primary_school_ayr_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/suzuvipoked.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/vitebopogujokafelomiga.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/on_the_way_home_jill_murphy.pdfIn PDF document text
    • http://tuxefofoxomar.epizy.com/grammarly_free_filehippo.pdfIn PDF document text
    • http://lagiwafumize.rf.gd/betalactamicos_farmacos.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/how_deep_is_your_love_guitar.pdfIn PDF document text
    • http://rumakepalo.rf.gd/gafedemepiwasod.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/ayodhya_songs_masstamilan.pdfIn PDF document text
    • http://losoxapo.epizy.com/self_reliance_credit_union_new_york.pdfIn PDF document text
    • http://kediresij.epizy.com/jetusutavulubuguwiva.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/organic_chemistry_equations_sheet.pdfIn PDF document text
    • http://bovapefe.epizy.com/47197084789.pdfIn PDF document text
    • http://nupakavidowux.epizy.com/download_film_fifty_shades_darker_2015_subtitle_indonesia_lk21.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_off0000fbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD6 5340 bytes
SHA-256: 818080ed362a9aaae8cc0b2c4496d2f7525fd06206022a90322dee30c606b9aa
font_01_sfnt_off00010e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E36 11076 bytes
SHA-256: 1197a1375dc437a9abb42ce37a7b229e419d489b5f641c8339cc5081e2b25f1c

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