Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef3c1e19e663199…

MALICIOUS

PDF

214.8 KB Created: 2021-04-07 22:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 804efeba7f08acf597bd252e63e43cf3 SHA-1: 5423382499a0b5edb24ce924b8fdcd7b17f28eee SHA-256: eef3c1e19e66319907115fc6c4afa32ec3f11d8a551a837e273de8d7607eda6b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to book series, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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/strik?utm_term=the+ugly+stepsister+book+series PDF link annotation
    • https://cdn.sqhk.co/fudimesa/jhhbijo/paw_patrol_rescue_run_apk_data.pdfIn PDF document text
    • http://kupimaxi.sportsontheweb.net/rewepenebukopejag.pdfIn PDF document text
    • http://50offstore.pro/zazogawykuyf.pdfIn PDF document text
    • https://cdn.sqhk.co/buzulexoxuve/gegijh8/vawabolifogaliwibagi.pdfIn PDF document text
    • http://motivawka.online/rekozabavuwubuc52.pdfIn PDF document text
    • http://ruxipivufaditij.22web.org/5293255352.pdfIn PDF document text
    • http://wozovumorawoka.sportsontheweb.net/17405264577.pdfIn PDF document text
    • http://winsl.space/depapabaduvirawusedexomefxh3t9.pdfIn PDF document text
    • http://zogometemo.sportsontheweb.net/britax_car_seat_remove_cover.pdfIn PDF document text
    • http://kakasusalulul.iblogger.org/how_to_use_schumacher_15a_battery_charger.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://deed868a-3c3f-4b0d-b3ae-f9ebe8a38c33.filesusr.com/ugd/95283b_694d77e3d6054dd7a0e606c5c72cbdca.pdf?index=trueIn PDF document text
    • http://mutezojujamanu.rf.gd/problems_on_ages_aptitude_questions_and_answers.pdfIn PDF document text
    • http://vexabimumemig.atwebpages.com/what_perspective_does_the_future_of_life_institute_have_on_ai.pdfIn PDF document text
    • http://zovaner.rf.gd/purpose_and_functions_of_law.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c53fe69f-d0ce-4c3d-bd49-c28c58fae790/nawebifomapevatirunaxo.pdfIn PDF document text
    • https://80b1f93a-fe74-4439-a81d-34814fa7a505.filesusr.com/ugd/e56fe2_ba3d3f2692424ce596005cb5ff875a58.pdf?index=trueIn PDF document text
    • http://sizemogigu.myartsonline.com/bihar_board_10th_result_2020_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4add9ec6-cad6-4623-b096-8f0c4391f88b/rheem_tankless_water_heater_start_up.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cd52034-36ad-41d2-a9c3-e77c94af2cbf/dama_dmbok_framework.pdfIn PDF document text
    • http://tenexivarafagi.rf.gd/sarpino_s_pizza_menu.pdfIn PDF document text
    • https://6fd4412c-3e6e-4f21-a9af-8137ffc6c0d9.filesusr.com/ugd/03469c_91aede7d445e42b9b25b6d4c9c64e81d.pdf?index=trueIn PDF document text
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_c69cd98f0dde433687423d13ccab8f7b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c661958-8c7b-469d-8762-d4d9da3f5db7/reizen_2_button_talking_watch_instructions.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_off00031560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31560 5124 bytes
SHA-256: 5e19e7b5bfac7143b3a60709698596ac63fdd8b9b35ee12d705d56d829608f9d
font_01_sfnt_off000326d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x326D9 11328 bytes
SHA-256: 31824eba430ebaf5833fd0c2a532ce313c9109984f18f8b6985e3e760062b7a3

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