Malicious PDF — malware analysis report

Static analysis result for SHA-256 87cc121e4da8f2f9…

MALICIOUS

PDF

96.4 KB Created: 2021-04-06 16:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1f24875ed0fa7315f1e662b3ba2207c SHA-1: dc482d58220ee9c1c9294c8a581bf719eec4d7f5 SHA-256: 87cc121e4da8f2f9423716d4e2acd171c399d7ee815becd5a248bd27c18cef2c
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 heuristic firing for an external URI. The embedded URL, 'https://kuzutuzo.ru/strik?utm_term=the+warded+man+film', suggests a lure related to a film title. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs indicate a phishing or malware distribution attempt, likely leveraging a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=the+warded+man+film
    • https://cdn.sqhk.co/komagiju/hihhjTF/34767216064.pdf
    • https://cdn.sqhk.co/dudofolejune/fgegcAy/hard_riddles_with_simple_answers_in_spanish.pdf
    • https://cdn.sqhk.co/fepexeguma/ihids5i/94611249286.pdf
    • https://cdn.sqhk.co/xamapetarel/ezOifgh/nursing_uniform_and_shoes_store.pdf
    • http://lelekelosutov.getenjoyment.net/internal_combustion_engine_meaning_for_dummies.pdf
    • https://cdn.sqhk.co/karapazepot/cRigMhc/32520657580.pdf
    • https://cdn.sqhk.co/budufunewuf/jdihhfk/lab_report_grignard_reaction.pdf
    • http://joxitikoki.getenjoyment.net/teoria_del_enlace_covalente.pdf
    • https://cdn.sqhk.co/mojafefegamo/licrXTk/sijoxutofonirep.pdf
    • http://vaxenovutejuzid.sportsontheweb.net/mosiniseguzetejisuwol.pdf
    • http://kifejuja.medianewsonline.com/kuzepajuguser.pdf
    • https://cdn.sqhk.co/wugunifikezu/gjthfia/temple_jungle_prince_run_game_download.pdf
    • https://cdn.sqhk.co/zejovedelali/gcWSrjf/renudapegof.pdf
    • http://wumomotetidofe.getenjoyment.net/9146127351.pdf
    • http://dujojiwasemob.mywebcommunity.org/99_names_of_allah_video_with_urdu_meaning_free_download.pdf
    • http://jepewadagamer.scienceontheweb.net/52548740811.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4050fe4f-85fd-4072-ad55-7b92b1abaf43/votapepevenekefojenasep.pdf
    • https://uploads.strikinglycdn.com/files/35c4f7cc-a60c-4b85-9a4d-1fd93a3136d5/will_there_be_another_if_i_stay_movie.pdf
    • https://s3.amazonaws.com/kujesulad/lagu_alangkah_indahnya_dunia_kurasa.pdf
    • https://uploads.strikinglycdn.com/files/7a2fdd65-cced-4df2-a461-762f714c8e24/8803905496.pdf
    • http://jelunegizubu.atwebpages.com/rancilio_silvia_model_e.pdf
    • https://s3.amazonaws.com/xefezesebusu/simpson_3200_pressure_washer_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013f6e.bin
ebce4734b9c6112ff3be0aa149336962d5ac6a936d7dd54b436b651e3464c630		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F6E 5012 bytes
font_01_sfnt_off00015061.bin
5b679d0488c73a241490daf16f4bf1a91da599f00a5c2d26d2462b8b851edec6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15061 10852 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.