Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b51a13ecba76413…

MALICIOUS

PDF

80.0 KB Created: 2021-03-12 05:12:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8f9c0be58f01ea830abce727651615a9 SHA-1: 89e20fc34409be20437645c0e7b044c0ab1f2d41 SHA-256: 2b51a13ecba764136ac61d830cd8487ac94acef7c85b4afb5b2626a600b88ecd
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate the presence of external URIs and a ML classifier flagged it as malicious. ClamAV also detected it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains text related to a Nike basketball sponsorship, suggesting a phishing or social engineering lure to drive traffic to the malicious URL.

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://fokemale.ru/strik?utm_term=how+to+get+a+nike+basketball+sponsorship PDF link annotation
    • http://gk-kuban.ru/how_long_from_planting_to_harvest_for_potatoesmxird.pdfIn PDF document text
    • http://zubiki.top/why_is_my_drag_saying_check_atomizerbdu0f.pdfIn PDF document text
    • http://luziniwanemek.sportsontheweb.net/41202451235.pdfIn PDF document text
    • http://znakomstva69.space/faxemuguxefssl8k.pdfIn PDF document text
    • http://wutanumijejol.sportsontheweb.net/bistro_definition.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/rawesaragegugar/extent_report_4_features.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/uses_of_acetone_and_formalin.pdfIn PDF document text
    • http://penobugixova.atwebpages.com/is_there_a_samsung_smart_tv_remote_app.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/revit_architecture_101.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/72397116331.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/properties_of_carboxylic_acid.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/garirofuronefominutu.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/nabugaso.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/vidmate_app_old_version_link.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/scag_tiger_cat_2_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/what_is_the_greatest_miracle_in_the_world_about.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/fanevofenojikukefip.pdfIn PDF document text
    • http://kuxemozoxabonag.onlinewebshop.net/16191382950.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/line_6_hx_stomp_bass_presets.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/timesheet_calculator_miracle_salad_time_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/19780607375.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_off0000fa9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9F 5340 bytes
SHA-256: 91e483b82b81dd731914f900ff860f53aa86cbb01edf28b3c7e4f0d8ca85c038
font_01_sfnt_off00010cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD3 11144 bytes
SHA-256: 5f618aaa5a9b3ac026867a2039bf2fc5104585ab44bfd347ae9be57f6002f95b

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