Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb852ef83c1ebc3…

MALICIOUS

PDF

75.9 KB Created: 2021-03-11 18:42:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85dd85916a6437b6373170f30f296b5e SHA-1: e7929e6c6469960101910f355154156218a0d1a7 SHA-256: edb852ef83c1ebc3afb363b8411d3929f998b4feb67c63949269682c273b6a49
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. An external URI pointing to 'botokaw.ru' was extracted, suggesting the document's purpose is to redirect users to a potentially harmful site. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/123?utm_term=ajax+form+submit+example+mvc
    • https://cdn.sqhk.co/vedisaso/GjgQGgd/sales_marketing_skills_resume.pdf
    • https://static.s123-cdn-static.com/uploads/4388067/normal_5ff9e3c4c0741.pdf
    • https://cdn.sqhk.co/sategexarom/aD6HZkN/yellowstone_kelly_movie_plot.pdf
    • https://cdn-cms.f-static.net/uploads/4478687/normal_5fd70a57e8d8f.pdf
    • https://cdn.sqhk.co/busumodofu/ciakmda/brain_dots_174_solution.pdf
    • https://cdn-cms.f-static.net/uploads/4471083/normal_6033852b0d225.pdf
    • https://cdn-cms.f-static.net/uploads/4380871/normal_60435429b65eb.pdf
    • https://cdn.sqhk.co/xetasenuwoji/hgyhhLK/photoshop_background_images_psd_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5fda7f67e7bc2.pdf
    • https://cdn.sqhk.co/mupalewefe/hXOjhid/prehistoric_pets_location.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/davubewu/five_year_plan_template_free.pdf
    • https://s3.amazonaws.com/zizene/wabogidupi.pdf
    • https://uploads.strikinglycdn.com/files/646e2a54-5c64-496a-985d-4b0ef929d3d7/41131964025.pdf
    • https://s3.amazonaws.com/pekatikisuruki/xomugarab.pdf
    • https://uploads.strikinglycdn.com/files/6966c664-9038-48e9-afa4-38b9160c79cf/visual_basic_tutorials_for_beginners.pdf
    • https://s3.amazonaws.com/xezonijida/carrier_06e_compressor.pdf
    • https://s3.amazonaws.com/petikamov/zodoribobiximeditusimef.pdf
    • https://s3.amazonaws.com/megodipewukitoj/english_linking_words_for_essays.pdf
    • https://uploads.strikinglycdn.com/files/863fb4fe-ba33-47e2-a210-ef59d4a24060/rupobolivexefiwejegodapi.pdf
    • https://uploads.strikinglycdn.com/files/69c6b114-ff00-4035-8e5e-9e607df0dde6/xoride.pdf
    • https://s3.amazonaws.com/sesafefanulokam/falub.pdf
    • https://s3.amazonaws.com/zoluwivebiro/gramatica_inglesa_para_iniciantes.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e433.bin
450cd7b4dff9c4d0be6c8ae49d77505d25e33484ba21fa18769295489581714b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE433 5496 bytes
font_01_sfnt_off0000f6dd.bin
be57e03b9996c13fcffe5cc05f0c8e2e691e21b4e60bcfc20e795953d48afc58		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DD 13344 bytes

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