Malicious PDF — malware analysis report

Static analysis result for SHA-256 94df514f06bf7a01…

MALICIOUS

PDF

75.8 KB Created: 2021-03-16 21:08:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 315c30b7f69d1c63c5409afb308ae849 SHA-1: 655266710d38f304b2211f4dfa818378f294ba3a SHA-256: 94df514f06bf7a019971a8a90bf6b2db597d4d009dbbcbae44ebb43ecf77006f
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates it functions as a link farm, with numerous links pointing to disposable hosting. The embedded URL `https://baarspo.ru/strik?utm_term=bontrager+node+1.1+sensor+battery` is a primary indicator of a potential phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/strik?utm_term=bontrager+node+1.1+sensor+battery PDF link annotation
    • http://gonifarej.mywebcommunity.org/car_maintenance_checklist_by_mileage.pdfIn PDF document text
    • http://zosuwalerikare.getenjoyment.net/ages_and_stages_questionnaire_download.pdfIn PDF document text
    • http://bachanalytics.com/how_heavy_is_a_sony_trinitron_tvow008.pdfIn PDF document text
    • http://storeeuro.info/setting_up_meade_etx_125kib42.pdfIn PDF document text
    • http://helpverifybadges.com/war_of_the_worlds_movie_1953_youtube92fiq.pdfIn PDF document text
    • http://winoraama.fun/dialogue_exercises_worksheet6l3le.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/what_is_the_best_fruit_and_vegetables_to_eatmgyh1.pdfIn PDF document text
    • http://teaitalis.space/mailchimp_template_vs_campaigna0a6w.pdfIn PDF document text
    • http://rujitexoxobag.mypressonline.com/lightning_arrester_seminar_report.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/the_yearling_movie_youtubedt4nt.pdfIn PDF document text
    • http://dom-bita.org/good_pub_guide_knaresboroughk8t9p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wesaloxovep.rf.gd/59278301573.pdfIn PDF document text
    • https://9fbaa0db-fe9e-443e-b503-3d02ea494c21.filesusr.com/ugd/d417e9_9c541d90d27c43abb54247065b78b6f4.pdf?index=trueIn PDF document text
    • http://gafawazela.epizy.com/didagijotodovuzamez.pdfIn PDF document text
    • https://72b50e20-f79f-40ca-96b4-24bef83e308f.filesusr.com/ugd/1a1092_ca62577280484ee7a69082b1c506e5dd.pdf?index=trueIn PDF document text
    • http://geforagegi.atwebpages.com/g_shock_5081_ga_100cf_manual.pdfIn PDF document text
    • http://vonanovab.epizy.com/context_clues_types_worksheet.pdfIn PDF document text
    • http://lojogonofar.rf.gd/mailing_label_template_for_apple_pages.pdfIn PDF document text
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_1192c77bf2cd4f5bb1aaffbdbdc362de.pdf?index=trueIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_65c08aa61c6d49edb89ce93551821440.pdf?index=trueIn PDF document text
    • http://zobuwijezad.onlinewebshop.net/piwoxamesum.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_off0000e8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D8 5336 bytes
SHA-256: 43ec72e5f01dff77f0bc740dc8b5c5710687784a1824a9d2b82542a61f998793
font_01_sfnt_off0000fb1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1D 11576 bytes
SHA-256: bade1416b687d9efa116a509a0010685c03151514da175a5087707670d82f474

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