Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d4bcd40b43e3e7…

MALICIOUS

PDF

71.7 KB Created: 2021-03-30 04:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 5f980247b171fdd3d178e61ef8255238 SHA-1: 5cca267e52f234cd6ea3f09090fc8ae7c3551779 SHA-256: 27d4bcd40b43e3e7765dc716770101b1e9ef5f6c98b17f0e6a60217c4f97a5a8
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. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or trojan distribution. The document body, though heavily obfuscated, appears to reference game-related content ('Glory of the ulduar raider guide') to entice users to click the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=glory+of+the+ulduar+raider+guide PDF link annotation
    • http://damezevuba.iblogger.org/votobixudadetuw.pdfIn PDF document text
    • http://vizemezezu.sportsontheweb.net/sejarah_islam_di_asia_selatan.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/hg6zmF9/skyblock_island_survival_games.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/10630564505.pdfIn PDF document text
    • https://cdn.sqhk.co/xapawavuma/gdfgfjc/xejikesovupap.pdfIn PDF document text
    • http://sigixexizo.sportsontheweb.net/barium_meal_follow_through_technique.pdfIn PDF document text
    • http://duribil.iblogger.org/aprender_a_leer_y_escribir_coreano.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/ibDXCgj/business_administration_information_systems_salary.pdfIn PDF document text
    • http://raxawevamavox.getenjoyment.net/are_delonghi_and_krups_the_same_company.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/okta_office_365_deployment_guide.pdf.pdfIn PDF document text
    • http://saniwigudovo.scienceontheweb.net/malaria_parasite_test_procedure.pdfIn PDF document text
    • http://waxedeb.getenjoyment.net/zirosefuvap.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/zobuwubedak/samesewimakovisiposuxuti.pdfIn PDF document text
    • http://fofeparulofiz.rf.gd/rokupanisosukexakimubuta.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/agneepath_songs_free_pagalworld._com.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/wolozis.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/nawoputubabufetajagixuk.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/vertex42_spreadsheets_free.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/donemo.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/ti_nspire_calculator_online_free.pdfIn PDF document text
    • http://movuzawizigevej.myartsonline.com/bhagavata_purana_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/my_talking_angela_for_android.pdfIn PDF document text
    • http://xobeminal.atwebpages.com/pepesaputikulenenuroxi.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_off0000db25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB25 5124 bytes
SHA-256: 31af3b861e20b0990aaa9ff4db9fb75ee3233c7777d0129b2fcbf530c644e641
font_01_sfnt_off0000ec9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9A 11008 bytes
SHA-256: 0e82fa77b17fe4a7324cd09fde48a3e0c22f1189fe43a3864cda3020bc29caa5

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