Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae08fcd2b6c0aed…

MALICIOUS

PDF

72.2 KB Created: 2021-04-01 15:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: a024adf814b61bc1e0c6eb03516eaf8b SHA-1: 582dabf0da63c06672aaece2b9958dfc6bc8a02e SHA-256: 8ae08fcd2b6c0aed9dcef245ffcc6fad86171f783a4b594719cdd2c07a7c626a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest it may leverage PDF vulnerabilities or JavaScript to achieve its objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/wix?keyword=mammal+worksheet+for+4th+grade PDF link annotation
    • https://cdn.sqhk.co/risenulowo/ijwgehc/top_country_music_videos_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/uhaPgjX/fire_alarm_testing_report_format.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_6062b5798e904.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/gglX5gi/download_hay_day_game_for_pc_without_bluestacks.pdfIn PDF document text
    • https://cdn.sqhk.co/xepiriza/jsgguij/r-_type_tactics_2_ending.pdfIn PDF document text
    • https://cdn.sqhk.co/jeposanop/CoyieR5/download_wallpaper_iphone_ios_13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_602bf5f8554e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5ff836c22520f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_60275a04444a3.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/Wiegehc/project_management_methodologies_pmi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450509/normal_6026327baf58f.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/3gEDJvL/dirinop.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/cbcdf87d-5f08-4a81-9a31-3941ee260f51/sunbeam_warm_mist_humidifier_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/whats_the_best_air_fryer_oven_on_the_market.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/17201439011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de9d287e-dc5c-4018-863d-9edc6c64dd07/how_will_quantum_computers_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7cd4065-7aa0-4fb9-becc-b37d6a225b1c/make_the_big_time_where_you_are_book.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/lokimewunikijezemelagazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97fbc6d7-141c-4004-8987-b822b726b2de/vakajukosuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/win_7_64_bit_activation_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/summer_waves_pool_filter_type_d_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/nigerian_albums_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/michelin_guide_2018_uk_live_stream.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_off0000dc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC61 5572 bytes
SHA-256: 2c6c11ddef689553557bd84e60a87b2d095b574da1b3692d1c804547d6d12216
font_01_sfnt_off0000ef50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF50 10416 bytes
SHA-256: 4176ff8986f2c1482664bf8c9b837de7726fc4a56fd586c5f4008a2404435464

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