Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c69dd9cd031d11f…

MALICIOUS

PDF

85.4 KB Created: 2021-03-23 03:17:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 630601763c34a1ebfaf518f11e531c62 SHA-1: 18b2129050c798db115d6685dc5d5b14e1ff67ec SHA-256: 9c69dd9cd031d11febbb5c0f5a22734e735fd95fe9bf1485b79ebbae1dff3073
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to 'ice breaker ideas for youth groups' and an embedded URL pointing to 'kuzutuzo.ru'. This suggests a phishing or social engineering attack where the document is used as a lure to direct the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://kuzutuzo.ru/strik?utm_term=ice+breaker+ideas+for+youth+groups PDF link annotation
    • http://kufomabid.mywebcommunity.org/nuxopufoxesuxogig.pdfIn PDF document text
    • http://serovakarara.mygamesonline.org/apsc_prelims_2020_question_paper.pdfIn PDF document text
    • http://tonemisi.medianewsonline.com/mavudevajomube.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/56206669520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447915/normal_6012a87e06477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_600ea939543ef.pdfIn PDF document text
    • http://rulimiwe.22web.org/rozerape.pdfIn PDF document text
    • http://kegeminu.iblogger.org/xezisefejuwuz.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/12972465136.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386830/normal_5fc8dae5ba754.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420775/normal_5fceab0ab017a.pdfIn PDF document text
    • https://cdn.sqhk.co/najuvotuwoz/g65hihc/81767003510.pdfIn PDF document text
    • http://givimemaregudum.sportsontheweb.net/amls_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/ifhihgL/26403180514.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jaziwosud.rf.gd/estadistica_ciencias_sociales.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/basabodapikip.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/install_android_acer_one_10.pdfIn PDF document text
    • http://fegozovot.rf.gd/how_to_use_self_clean_oven_ge_profile.pdfIn PDF document text
    • http://xizibosoj.epizy.com/74847561678.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/30952745982.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/81763286827.pdfIn PDF document text
    • http://vedixemalirugi.atwebpages.com/99259615322.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/monster_2003_soundtrack_list.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_off00011146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11146 5628 bytes
SHA-256: b89d019909de888bcdc1975a12a1891d4b683ac93d879cae3d8fb6878978f455
font_01_sfnt_off0001246e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1246E 10356 bytes
SHA-256: 84a0773895cf452ff4ba80d161d10eae38b2401dca9614b7fcb743f75eda2e80

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