Malicious PDF — malware analysis report

Static analysis result for SHA-256 39bffd772ad944ad…

MALICIOUS

PDF

79.3 KB Created: 2021-03-08 14:56:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: d79af1f059b44d6f8f4e5bdffc176a70 SHA-1: b85e45a99f90d2a2584298133d668a256448f318 SHA-256: 39bffd772ad944ad84871a8cb0a908a17758a19cb799ee850482cec0e187b466
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. It contains an embedded URI pointing to 'resalured.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to 'Bombay dyeing online bed sheets', indicating a potential social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://resalured.ru/123?utm_term=bombay+dyeing+online+bed+sheets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366405/normal_6039d13d6fced.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366305/normal_5ff8d79b1f7f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476133/normal_601f9a6e09ac9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373519/normal_60083c793e4e5.pdfIn PDF document text
    • http://bukejasinopa.22web.org/buganda_kingdom_anthem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_602151af48a3e.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/0b2df25a-28fb-4a40-9ac6-0de283949042/citizen_mens_eco-drive_titanium_watch_blue_bm7170-53l.pdfIn PDF document text
    • http://vegunag.rf.gd/battlelog_emblem_editor_extended.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/55106156564.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/ziwatutevadonofejuweg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/140ef9e5-77f5-4891-bf3d-893dcc395bdc/saunders_nursing_drug_handbook_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/hallelujah_viola_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/algebraic_expression_worksheets_7th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/581f79fa-ecff-42cd-8c73-37d857c1fccd/59356108843.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf35bd68-bf94-4b69-95d9-23bc0ba75868/realtek_hd_audio_manager_update_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a3f9673-d63b-4a17-b2bf-c33742819325/76638901239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfd212b1-a916-44d6-a5e7-2c01bc9ad3ac/what_episode_does_carry_on_my_wayward_son_play_in_supernatural.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd5ea148-68f2-4488-8bd2-d6f1b4bcf6f5/craftsman_6hp_air_compressor_rebuild_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/61781824076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84c638db-8cc1-4639-af02-6ba4db3bfdee/smart_body_scales_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ce17391-5ef1-4375-b574-3d1cc65f3a75/how_do_i_find_out_what_year_my_samsung_smart_tv_is.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/dugamowoxeroxejef.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/air_brake_system_file.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_off0000f6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F1 5432 bytes
SHA-256: 41bd21249d973ccd16309a2da1467fa4155ad530b265a9fb1274e97d51ccf52e
font_01_sfnt_off00010949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10949 11352 bytes
SHA-256: ed36f6da1578df5ce7d934b0d912a48cba80d35bbc0eaf7e65b84303a43b0b58

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