Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be21090fec19342…

MALICIOUS

PDF

94.4 KB Created: 2021-04-02 08:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2f63b47b8480370732eca08a5b5241d1 SHA-1: 944dafc18d4be53daa0620607691f90fa313e8fe SHA-256: 8be21090fec19342a21465ca824d06ab4d214bfd65be455c7c58c130b423b0ad
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malicious lure. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs within a PDF document often implies an attempt to redirect the user to a malicious site, potentially for credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://soxebez.ru/award?keyword=learning+how+to+learn+journal+pdf PDF link annotation
    • http://reduslimitaly-official.site/50986685938b4ps4.pdfIn PDF document text
    • http://gexulogoben.sportsontheweb.net/two_sides_of_effective_oral_communication.pdfIn PDF document text
    • http://viwafuxofiseko.getenjoyment.net/wokaxonovine.pdfIn PDF document text
    • http://dragonflysagewellness.com/choppa_name_meaning_in_urdueitwr.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://nujagexurej.medianewsonline.com/biodiesel_production_a_review.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/canon_7d_specifications.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/30234692844.pdfIn PDF document text
    • http://shortsomfj.space/daily_task_planner_template_excel1kd12.pdfIn PDF document text
    • http://lukiduxipapep.mywebcommunity.org/c_objective_questions.pdfIn PDF document text
    • http://rijexofugovu.medianewsonline.com/enterobacter_species.pdfIn PDF document text
    • http://lipexifinidoda.scienceontheweb.net/bumotopa.pdfIn PDF document text
    • http://biwedujurar.mywebcommunity.org/gloomhaven_scoundrel_cards.pdfIn PDF document text
    • http://pemotutafid.mywebcommunity.org/the_algorithm_design_manual_github.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/fulazelof/definition_of_visual_impairment.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/steel_structure_design_calculation_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/89961229403.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/betev.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/86584052296.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/battery_saver_application_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/game_soul_blade_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/ar_ageing_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/w3schools_html_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/wilidotoredipalamut.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/methylene_blue_sds_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/puzzle_crossword_proving_angles_congruent_answers.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6B 5236 bytes
SHA-256: 350bb35540380c28e10e4c13dc3c7a2306c84e21cd9294fe4dafc2cc07e5a4fe
font_01_sfnt_off00013153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13153 10876 bytes
SHA-256: 9a52ac4db2b42a201dd07b431bca0d7cb1d0dce0f727b6df54845dbdca4f72f6
font_02_sfnt_off000156d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156D5 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7

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