Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f8c8769a0435e68…

MALICIOUS

PDF

96.9 KB Created: 2021-03-12 01:16:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b716e326f8f3ddc80c03d715481335d8 SHA-1: 47fbcffe272f4ebd232cf3cf818e7d219cc1de9a SHA-256: 8f8c8769a0435e68f5206fccc3c31a1e225d515afe5a29a1d0944fa7df78266c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The embedded URLs suggest a phishing or malware distribution attempt, likely aiming to redirect the user to a malicious site. No scripts were extracted, but the presence of external URIs indicates an attempt to download or redirect to a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/strik?utm_term=what+is+an+example+of+information+processing+theory PDF link annotation
    • https://cdn.sqhk.co/zabeluzitema/iH9T95R/cake_decorating_lessons_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/3Yhhidj/duzejewugogiri.pdfIn PDF document text
    • http://trackengine.host/certified_analytics_professional_study_guide6j83d.pdfIn PDF document text
    • http://sayseedokg.com/bupaluvuzojakujootmju.pdfIn PDF document text
    • https://cdn.sqhk.co/rokabumake/g0S6Kgd/download_mod_car_master_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/vikoparif/UGbzIbp/nigeria_church_worship_songs_lyrics.pdfIn PDF document text
    • http://lawyer-consult.ru/the_power_of_now_journal_free_downloadq200o.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/fhb1IO0/dank_meme_sound_music_effect.pdfIn PDF document text
    • https://cdn.sqhk.co/rawavuzom/diVuQgi/4520931105.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/idjY6Xj/gofibedevunorekebotifosif.pdfIn PDF document text
    • https://cdn.sqhk.co/zeputefilu/ihDgeie/23256046879.pdfIn PDF document text
    • https://cdn.sqhk.co/bilexodofose/0cNVFja/kadepagejagudesaju.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/qGib4Bi/boxigi.pdfIn PDF document text
    • https://cdn.sqhk.co/rokabumake/gw6z9hj/44224582028.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/424eijd/51485203466.pdfIn PDF document text
    • https://cdn.sqhk.co/kujufemom/ja8pQEh/reversible_sectional_sofa_with_storage.pdfIn PDF document text
    • https://cdn.sqhk.co/livoluxuwad/erXgCuw/idle_wood_tycoon.pdfIn PDF document text
    • https://cdn.sqhk.co/komagiju/jicaghJ/rarosar.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/ibiijhn/street_of_rage_2_rom_hack_download.pdfIn PDF document text
    • https://cdn.sqhk.co/leloxoreje/gjM3jfe/8425750242.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6c64b8d-e98e-4e9d-b876-4b240ad05e48/bidoruwivosuzuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a17f8dd-0e5b-4a50-87f5-dcce28db6aac/technical_writing_masters_degree_programs.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_off00013eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EEB 5612 bytes
SHA-256: f2a39de41c9421270041e1642fb5f76dfe7c110efc26489d39f2f4eaf15eaa63
font_01_sfnt_off000151f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151F3 10788 bytes
SHA-256: 23909061ac7a605363d6f2167b276be95d2edbbf4301c79b57209c912653b51a

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