Malicious PDF — malware analysis report

Static analysis result for SHA-256 215dbbf115e39613…

MALICIOUS

PDF

72.0 KB Created: 2021-04-03 04:34:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 5b66305850c2e962605abbe0871adbcf SHA-1: d8f1ddfd022b9e8b9e84f48561b150eaaf420c10 SHA-256: 215dbbf115e3961321246d657f690cb7f15ff1f2140970fbb32b2f112fd461bb
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://jumiwimov.ru/strik?utm_term=logitech+z323+2.1+channel+computer+speaker+system', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure itself is also flagged for duplicate object bodies, suggesting potential obfuscation or malformed content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/strik?utm_term=logitech+z323+2.1+channel+computer+speaker+system PDF link annotation
    • http://vezerfa.xyz/pejerapusirerunapogofansgs76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375209/normal_5fc71760daeb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409797/normal_6044a0c49dffa.pdfIn PDF document text
    • http://workbykoder.xyz/shadow_and_bone_netflix_wylan7dhcs.pdfIn PDF document text
    • http://dalejupoguj.22web.org/100_names_of_allah_with_meaning.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://muzusebab.22web.org/introduccion_al_materialismo_historico.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450350/normal_5ff2ba9faa544.pdfIn PDF document text
    • http://soldatskaya6.ru/washington_state_covid_vaccine_eligibility_formhk0lg.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/gonima/gilinudabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5d16171-6c9c-43bb-9eda-f2d48ab16b52/63048161268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be0e96c3-d456-4426-80a8-dca604ef1976/the_monkey_king_movie_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/combining_sentences_using_appositives_worksheet.pdfIn PDF document text
    • http://newigumumakewi.epizy.com/how_to_describe_climate_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/1539224964.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/pauline_oliveros_deep_listening_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df53d361-fe53-462b-88ea-2dda7a49c2ec/50211215925.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/lefuv.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/what_is_literal_equations_and_formulas.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_off0000d994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD994 5884 bytes
SHA-256: 5e697cf69ae34392466d6234929ee73189c9d744befb5b4c29ad68a78a4d291b
font_01_sfnt_off0000ed99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED99 10332 bytes
SHA-256: caf9e4b3a1abeda04b75f4faf54cfa3f4f42e56819f644b3644c6362cf691305

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