Malicious PDF — malware analysis report

Static analysis result for SHA-256 6317fe3d5a7b0438…

MALICIOUS

PDF

75.4 KB Created: 2021-03-16 00:20:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 49ed4a93a0fbaabab4672547bfa594e8 SHA-1: ba298033ba0fcef2d8536d88114e3f6a0752128e SHA-256: 6317fe3d5a7b043804a8a3263f01ef14aaefe495d898f301e0511f873c14d525
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wix?keyword=bolay+promo+code+2019 PDF link annotation
    • https://cdn.sqhk.co/widobixi/9jbuzW8/reported_speech_backshift_bungen.pdfIn PDF document text
    • https://cdn.sqhk.co/zodozane/heiahWC/electricity_meter_reading_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wugoxoxowex/wlgdJjh/fm_2019_best_young_midfielders.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/EAhcijQ/21474927762.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/iggjNie/pozupujuzazuragokedul.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/dyji5hb/murder_hornet_texas.pdfIn PDF document text
    • http://yildirimotobursa.com/44223322227hpja9.pdfIn PDF document text
    • https://cdn.sqhk.co/modesarox/jhcPihC/chand_safari_jo_karta_hamari.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/djbhaje/25946690025.pdfIn PDF document text
    • https://cdn.sqhk.co/jututumogu/Vyjehgz/puzzle_3d_ravensburger_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/Qgcihii/pase_elite_sakura_free_fire.pdfIn PDF document text
    • http://ehaberdevlet.com/ruxowunaf1suz.pdfIn PDF document text
    • https://cdn.sqhk.co/zoboxoba/haBhIPe/digital_clock_weather_theme_10.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuzodopuvu/fbbSliD/xisitojipi.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/ToyhhaA/12075938614.pdfIn PDF document text
    • https://cdn.sqhk.co/gepabafi/jbdB0jb/super_mario_world_3_cheats.pdfIn PDF document text
    • http://migunovaj.iblogger.org/41249700460.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://galizojiga.rf.gd/93104101320.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_off0000e5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F3 5676 bytes
SHA-256: 8183120d43aedfb463f28cdfcc93a335ee1716735842e6f8418b0e981714805d
font_01_sfnt_off0000f940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF940 11228 bytes
SHA-256: d71517790b965bcb31a11d1f4ea97ef9aaf6f4b8a31afcab6a518ce27f152999

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