Malicious PDF — malware analysis report

Static analysis result for SHA-256 15151e56bcf6447f…

MALICIOUS

PDF

74.9 KB Created: 2021-05-28 19:22:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 57da157d0abbca0fe4c8922545fa7aad SHA-1: a8d49b1d884299ad7319f37f1842beeb86ebc11e SHA-256: 15151e56bcf6447fde594ad6543bc5349aeaf6ed88d3b396d403d42af80743d7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs to a suspicious domain, disguised with a search query related to 'Nickelodeon Paw Patrol'. ClamAV and ML classifiers have identified this PDF as malicious, specifically a phishing or trojan variant. The presence of an external URI and the overall classification strongly suggest an attempt to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://nipisod.ru/strik?utm_term=nickelodeon+paw+patrol+adventure+board+game+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413110/normal_600e5e2fe93d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482882/normal_5fe2b917590b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484609/normal_5fdeebfe2f435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_605f9232cf1e8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ababccb-59d2-4eaa-a0a8-31d1bf673f85/rosivamixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ace687-8ba5-493c-87f7-4a1d1287dfa9/bose_wave_music_system_remote_control_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5acb5a58-7cc5-458c-aba5-9c80db27fced/97484984465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b94de2c-33d7-4539-8432-a72dff92b528/windows_10_installation_failed_in_the_safe_os_phase_migrate_data.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/295223bf-3dfb-4cfe-877a-a4b9dd9a5c94/3455222577.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8995c770-6a8f-46c8-8471-fae082cd05a9/51994765737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9949b729-bfa5-49d7-a475-1df53d898bd4/hamilton_beach_dual_egg_sandwich_maker_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85d0826b-0692-43ee-ade8-9f89654324d5/study_guide_and_solutions_manual_for_organic_chemistry_7th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1df08a6-384a-4cc1-81f5-7d37dc7b0d85/86698001512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/017f8de3-e01f-4679-8ccd-bd0f1a588dfc/rosalojetakakita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56b736c3-6ba6-4951-b2b6-373797158779/remivafobifuxawopalakad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa900486-e038-47bd-8bb7-088b50d0fef2/koc_approved_vendor_list_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de39688-4655-4d0d-a3a8-8b6a5a1c31a6/jlab_jbuds_air_executive_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afc5c961-cd48-4ea5-b452-e5a3b955494e/how_to_write_an_incident_report_template.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_off0000e3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C4 5716 bytes
SHA-256: 1cd1057d6d1f69f0915e5a4a9cceaf12d882ccd9674a058d712b8761a1b5aa38
font_01_sfnt_off0000f73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73B 11860 bytes
SHA-256: 3657dc305ff27f18943210cd1685e432eb40f6a3158c47ae629f2f144ef5de11

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