Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd2af838ee2b248…

MALICIOUS

PDF

75.9 KB Created: 2021-03-23 13:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: e7e2b9a18b61ea8b14c8a79e1e499607 SHA-1: fb44cde7161f0a9c25ca1884f4f0804dc7ae26b8 SHA-256: 7dd2af838ee2b248688d024fed81179179448db61f91e4b1af2aa581d93949e0
136 Risk Score

Malware Insights

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

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains a heuristic indicating a payment redirection lure, suggesting it aims to trick users into believing there are new or changed bank instructions. The embedded URL `https://kuzutuzo.ru/wix?keyword=bank+bonus+offers+february+2020` is the primary indicator of this phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://kuzutuzo.ru/wix?keyword=bank+bonus+offers+february+2020 PDF link annotation
    • https://cdn.sqhk.co/rasepotobami/GQje1id/any_cure_for_inclusion_body_myositis.pdfIn PDF document text
    • http://zedakobogesa.mypressonline.com/misikiwexonupojobukam.pdfIn PDF document text
    • https://cdn.sqhk.co/boxewemutox/ajchbjg/dosuwasomefebogoforijabak.pdfIn PDF document text
    • https://cdn.sqhk.co/likunubiba/Ojfghii/download_game_cooking_tycoon_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipox/jehfhbj/multithreading_interview_questions_java_advanced.pdfIn PDF document text
    • http://xupevagadozojad.22web.org/queen_bed_fitted_sheet_ikea.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/how_to_pair_ps4_gold_headset_to_dongle.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/62440468762.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/8Tjbx7Q/45500421086.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/zulezurodifinu.pdfIn PDF document text
    • http://vagokij.iblogger.org/where_can_i_buy_a_smoke_detector.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/lazesej/2005_nissan_pathfinder_catalytic_converter_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/zadazof.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/color_sheets_for_kindergarten_students.pdfIn PDF document text
    • http://kiwusumusi.rf.gd/bungalows_for_sale_formby_merseyside_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/android_10_launcher_for_pie.pdfIn PDF document text
    • http://kubomefewofumim.atwebpages.com/easy_piano_sheet_music_free.pdfIn PDF document text
    • http://kejefutipetube.epizy.com/sbi_atm_card_application_form_online.pdfIn PDF document text
    • http://makunixiwelukiz.rf.gd/ds_lite_release_price.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/38257044167.pdfIn PDF document text
    • http://lakelasu.rf.gd/20316895962.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/a_level_maths_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/43298096669.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/sherlock_holmes_books_online_free_download.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_off0000eafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFE 5356 bytes
SHA-256: 65b2b7965d708bb1841f65e4270340f0571a54b385551b1ca0e24cc1a536dcc2
font_01_sfnt_off0000fd52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD52 10744 bytes
SHA-256: eedd4d73b66c5c74751d7c840b05af479a2500fa6ff2b4035d8679adcc7ccf44

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