Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ddfe98eee7bf2d9…

MALICIOUS

PDF

71.5 KB Created: 2021-03-18 11:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7b43e6d855ef85ff36625c11c02d00c SHA-1: 71dd33511eef4b2c0afbb0bbdd0dcd0f5bd3efc0 SHA-256: 0ddfe98eee7bf2d90e8e676cf8e44bcc832a8ab7a417961fd10e30d946b21fad
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://botokaw.ru/wix?keyword=plant+and+animal+cells+worksheet+tes', which is likely a phishing lure or a distribution point for further malicious content. The document body, though heavily obfuscated, appears to contain metadata related to its creation, suggesting it was generated programmatically rather than being a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=plant+and+animal+cells+worksheet+tes
    • https://cdn-cms.f-static.net/uploads/4530429/normal_6020b5728e2a8.pdf
    • https://static.s123-cdn-static.com/uploads/4475727/normal_600897afe9696.pdf
    • https://cdn-cms.f-static.net/uploads/4369163/normal_6039465ac1614.pdf
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5fd3191c6593a.pdf
    • https://static.s123-cdn-static.com/uploads/4480880/normal_5ff286cfcb2f1.pdf
    • https://static.s123-cdn-static.com/uploads/4462038/normal_600100cf69f77.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jovebaben.epizy.com/annexure_e1_hssc_self_declaration_form.pdf
    • https://s3.amazonaws.com/sabegokek/freeze_alarm_fa-i-cca_manual.pdf
    • http://fusarafabar.epizy.com/avenged_sevenfold_waking_the_fallen_free.pdf
    • https://uploads.strikinglycdn.com/files/93e54253-27e9-4b90-9cdb-b1b068a1c86e/does_gemini_play_mind_games.pdf
    • https://uploads.strikinglycdn.com/files/6c1fa28a-4799-4501-9d9d-0afb38cc87eb/68372965779.pdf
    • https://s3.amazonaws.com/rufonali/dell_xps_8300_video_card_replacement.pdf
    • http://beverunogi.rf.gd/euripides_medea_sparknotes.pdf
    • http://wasupedojewemo.epizy.com/download_livro_histria_geral_e_do_brasil.pdf
    • https://s3.amazonaws.com/mesotodimus/70695461364.pdf
    • http://kepujelibip.epizy.com/acoustic_guitar_gospel_instrumental_music_free.pdf
    • https://8641c524-1fb5-4292-87ed-dd72f64d6c22.filesusr.com/ugd/9b7d8a_b41eddc9dfca455580192d39857f2625.pdf?index=true
    • https://d25e5d79-f3dc-43ab-8538-58f2f4730235.filesusr.com/ugd/898300_6eb2b1ce182f47fea3f3c9f55edc8893.pdf?index=true
    • https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_59e32cdf48b74490af14c72b47fc52de.pdf?index=true
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_dfb6d87d3b2f49f6a576c8e6c7f3e62b.pdf?index=true
    • https://357b8bef-7330-4cfe-b31d-389db25c4d5a.filesusr.com/ugd/4c76bf_8a58885edbcf4627af77ebecc523a2ed.pdf?index=true
    • https://uploads.strikinglycdn.com/files/161ebc26-756b-4905-b346-858ce93175a3/48418814315.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db07.bin
2e9517bbd4e84df1dcf99ccd81887e94445116cf55128589d0ebc1d1e5e57a6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB07 5336 bytes
font_01_sfnt_off0000ed0f.bin
c5881f62212ce1892258049ddcb5113350d97e4c097c4ca924290030e6c7bb6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED0F 10620 bytes

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