Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02d650410bbf394…

MALICIOUS

PDF

78.3 KB Created: 2021-02-20 17:22:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: cb7657000683a666fdc7ad991b0129da SHA-1: 3d824d3be332134f80dbfef58243aa7e0800f9f4 SHA-256: d02d650410bbf394ceca42535821cbfb586165ef97156f3cae4762c344de0bc5
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'https://bologen.ru/wix?keyword=wister+high+school+basketball+schedule', suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, appears to be a lure related to a school basketball schedule.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=wister+high+school+basketball+schedule PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451750/normal_5fee644bdbad8.pdfIn PDF document text
    • https://cdn.sqhk.co/bozogekeji/ijvIicm/zombie_infection_gameloft_chapter_3.pdfIn PDF document text
    • http://ubzvp.com/samigujivavodidifou80o6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480736/normal_5ff5d587449b6.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/hghihgB/steamship_authority_nantucket_prices.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383678/normal_5fe50e497e11e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477400/normal_601e8c3513d13.pdfIn PDF document text
    • http://kengoru.space/joplin_humane_society_volunteernt9uq.pdfIn PDF document text
    • https://cdn.sqhk.co/gisanewat/b4yjcDp/galaxy_wallpaper_desktop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483591/normal_600a670a1fc8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393759/normal_601c5b6fb9b97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468837/normal_6028429851109.pdfIn PDF document text
    • https://cdn.sqhk.co/surixirulol/fnchgij/simple_arduino_iot_projects.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457843/normal_602d4e1370a36.pdfIn PDF document text
    • http://muzoc.xyz/95806765893whbwf.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/icJgcxg/fate_of_racing_furious_8_full_movie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/luropiw/91211934466.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/invitation_card_for_1st_birthday_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/pogofujoxitibanuzinugup.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_off0000f49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49A 5420 bytes
SHA-256: b4c8f5e88e00f7fb47abda0cdbfbff99752615420f75d41e6ebcef6276818661
font_01_sfnt_off0001070c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070C 10720 bytes
SHA-256: 2590043c3bae805a21a68a4a2a8c0562a4dc17e41fb8941f52da649ca7d8eca0

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