Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df1ee2e8dd47483…

MALICIOUS

PDF

97.0 KB Created: 2021-05-27 07:37:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 7dcc657ccb3fd91f78369efb555cbde1 SHA-1: add740b1b26cd168b193e211745ebb0b08547086 SHA-256: 6df1ee2e8dd47483e620e8298cb3180af976404cb49802a05f3621258867d991
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a phishing lure. Although no scripts were extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, consistent with phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/strik?utm_term=a+rose+for+emily+questions+and+answers+commonlit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474720/normal_6025cbc9d3295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_603402d61ab5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420438/normal_5fe461e944eda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_60497fdd2b470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453333/normal_605099f7efea4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379380/normal_60465c8695c07.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b4446610-0b7f-45ef-be34-d48259e107d3/how_to_market_a_business_on_social_media.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc63fdad-bfc2-417d-b282-20efbd4e6e70/converting_quadratic_equations_between_standard_and_vertex_form_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a4d41d0-1252-4889-ada9-1cf3de1c24c2/vizio_sound_bar_setup_to_samsung_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2befe521-c466-4909-b7a0-c1de8e7d9042/24771920676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e498f93-555f-4cea-9200-d2fc14e22e9c/44870028988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a7d6fd-ef79-40fe-9474-05d27b60ec9a/where_can_you_get_straight_talk_refill_cards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db19a1fc-767f-49f5-a902-0f3e3803e387/2000_prevost_h3-45_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b599ff6-4d9e-4fb7-ac8e-9d3e4dcb31a7/what_not_to_eat_alkaline_diet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/925d195d-a521-4e9f-82a6-0b3e4f7dd4b2/information_technology_project_management_kathy_schwalbe_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b114b9a-44df-4b56-b822-027dafb4ccd0/55182346430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b18d95a4-4b31-4dbf-add2-7b4fe81d877c/how_to_reset_a_braun_digital_thermometer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f866bfb1-7607-41bb-b7ec-24af99c510fe/is_should_a_modal_verbs_of_possibility.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6368eee6-8f16-460f-8c7e-cce3d6c6a76a/the_magic_school_bus_rides_again_the_frizz_connection_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FBA 5360 bytes
SHA-256: 210ffd374da53722d707fd1d18f3ff2e47f16e4fc04b5538ee3c3304b811a8ac
font_01_sfnt_off000141e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E9 11340 bytes
SHA-256: e5b7509ad4ec5d04f241d3f2bd0a3164299aa7f1402532dc132537452b93ee9e
font_02_sfnt_off00016863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16863 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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