Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be0c07b5f95a364…

MALICIOUS

PDF

85.9 KB Created: 2021-05-03 02:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98acce141f66950365bb2acc392373d6 SHA-1: 76749bf3d9050db056e578a841ebe98681309394 SHA-256: 0be0c07b5f95a3640e6d308ee3f1998daef4a9d4ac7d2664ab3581dd3066c9a2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'https://zajinet.ru/strik?utm_term=white+fang+skateboard+uk', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure and embedded content suggest it's designed to trick users into visiting this external link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://zajinet.ru/strik?utm_term=white+fang+skateboard+uk
    • https://cdn.sqhk.co/rowunozimop/jbTjaid/luweralagedozejakexeba.pdf
    • https://cdn.sqhk.co/vulovosovem/eidVjjg/airtime_easy_demon.pdf
    • https://cdn.sqhk.co/jujejorule/Ajcgjij/mexican_ice_cream_truck_near_me.pdf
    • http://lapitubemexidi.mywebcommunity.org/witelonula.pdf
    • https://cdn.sqhk.co/vurikede/fYiejgv/archer_hotel_florham_park_morristown_florham_park.pdf
    • https://cdn-cms.f-static.net/uploads/4477886/normal_5fe7f0397fb36.pdf
    • https://cdn-cms.f-static.net/uploads/4371553/normal_604d6d09b0b4b.pdf
    • https://cdn-cms.f-static.net/uploads/4417807/normal_602866e362fe2.pdf
    • https://cdn.sqhk.co/zudatona/gijfgeJ/toy_defense_fantasy_td_strategy_game.pdf
    • https://cdn.sqhk.co/xulawajikigi/hfWmmCW/lucky_block_addon_for_minecraft_pe.pdf
    • https://cdn.sqhk.co/kupejabel/T5TG7ji/company_of_heroes_2_complete_edition_cheats.pdf
    • https://cdn-cms.f-static.net/uploads/4380229/normal_6011fb5fa0e44.pdf
    • https://cdn-cms.f-static.net/uploads/4459469/normal_5fd703622e2e1.pdf
    • http://tonilakifak.mypressonline.com/after_livro_4_portugues.pdf
    • https://cdn.sqhk.co/xolanikipiz/gdM6gdU/one_deck_dungeon_review.pdf
    • https://cdn.sqhk.co/kivipemo/Coljfza/20686375296.pdf
    • https://cdn.sqhk.co/fusajovogi/ustVghO/38989222778.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kalanejaxutilif/hp_pavilion_dv7_fan_replacement_youtube.pdf
    • https://s3.amazonaws.com/kiguteperilodu/fico_score_3_credit_reports.pdf
    • http://xizokenimufewom.atwebpages.com/88967464650.pdf
    • https://s3.amazonaws.com/mufukep/83170303569.pdf
    • https://s3.amazonaws.com/zukogi/ultimate_shred_reviews.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010797.bin
1baa3efd180cf5f44d613abe34ea0380c2d25dd221f4ef864ac418d56f73cc35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10797 2912 bytes
font_01_sfnt_off000111f3.bin
482518d7d684aaa9218d4ae30c89b10f5039f93aa8b2f66df1120da5fce350ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111F3 5352 bytes
font_02_sfnt_off00012432.bin
0cb180a73427c704a20c294c34d069593dac7e12cf3622650299e52658179dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12432 10956 bytes

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