Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9be0184bdcfb472…

MALICIOUS

PDF

85.4 KB Created: 2021-04-05 23:51:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bf70b62ac92a5a1d79aebb5dbcc9a5f5 SHA-1: 899d7639cf26e65600860e718c0b7a35b5780613 SHA-256: d9be0184bdcfb472ceef4e4a420e1f8c1ecb6ff5e209f658766e62af7c574a54
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 ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'xezojetit.ru', which is likely used to deliver a malicious payload or redirect users to a phishing site. The document body, though heavily obfuscated, contains keywords related to games, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/wix?keyword=ninja+games+unblocked+77 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426410/normal_60297cf3b4805.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_601789f5d918d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486356/normal_6036d91c363ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488133/normal_5fd7c75d169a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465259/normal_5fd08eb396711.pdfIn PDF document text
    • https://cdn.sqhk.co/sinupupuzaxa/OyeggUZ/one_piece_treasure_cruise_team_creator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382965/normal_5fe1c02c3bbd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403417/normal_606b65bd331a9.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/hhfQFhh/barbecue_sauce_recipe_ketchup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bojafazes/sura_yasin_bangla_translation_mp3_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/xitabiwoxesili.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/captain_america_1944.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/android_browser_app_source_code.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/online_application_form_du_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/91739163293.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/tuzixadopijotijojatefuz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF966 5492 bytes
SHA-256: ea2edcf5ed3aee1cf9bb852a1b667caa96fc26e9173ddb10014818c34fe07473
font_01_sfnt_off00010c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C19 11024 bytes
SHA-256: 322a92d9c658c478e05355f1d44dc89bd08b11fd236491163724d49a5936fa69
font_02_sfnt_off000131c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131C9 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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