Malicious PDF — malware analysis report

Static analysis result for SHA-256 214602e35a8b9143…

MALICIOUS

PDF

79.2 KB Created: 2021-04-02 20:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 634dbe1a4197fbed03feaa900e0cd4f1 SHA-1: 72fb7b078ac4189c7b670a41c21726406d217886 SHA-256: 214602e35a8b9143264996a0a88caff04320814d5d1c3eeb9f45c6f373999551
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to basketball court dimensions. The presence of an external URI and the ML classifier's high confidence score indicate a malicious intent to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/wix?keyword=cancha+de+basquetbol+con+sus+medidas
    • http://fumexijana.getenjoyment.net/libros_sobre_administracion_publica.pdf
    • https://cdn-cms.f-static.net/uploads/4408343/normal_601b0be6afc70.pdf
    • https://static.s123-cdn-static.com/uploads/4368250/normal_5fcbac08775b2.pdf
    • https://cdn-cms.f-static.net/uploads/4366652/normal_6048250daab24.pdf
    • http://gijipodotetojo.22web.org/how_to_use_a_omron_bp652.pdf
    • https://sinupumu.weebly.com/uploads/1/3/4/8/134893056/f23a43e073813.pdf
    • https://merirano.weebly.com/uploads/1/3/2/7/132710628/91b151f4.pdf
    • https://puneliten.weebly.com/uploads/1/3/4/0/134040782/2246765.pdf
    • https://tuzuvujejoru.weebly.com/uploads/1/3/4/4/134442534/vosafo-bisubuwodonakus-jefatolurunivum.pdf
    • https://cdn-cms.f-static.net/uploads/4375356/normal_603f0d66f38c9.pdf
    • http://lomidal.mygamesonline.org/12061986632.pdf
    • http://fumuroruzej.medianewsonline.com/carl_jung_red_book_english.pdf
    • https://cdn-cms.f-static.net/uploads/4420764/normal_5fd6dc72cf466.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b2043f39-0091-4c0c-bab2-a0ba3fa1fbfb/how_to_work_for_polaris_human_trafficking.pdf
    • http://tidokimutuju.rf.gd/redaction_des_actes_administratifs.pdf
    • https://s3.amazonaws.com/vebisop/practical_english_phonetics_and_phonology.pdf
    • http://kunibenurupamiv.rf.gd/nikijaduxoxo.pdf
    • https://uploads.strikinglycdn.com/files/94d99582-8dc2-4710-bfb6-b47f1630c402/zibikoniluruwaponugalon.pdf
    • https://s3.amazonaws.com/gotitibekovi/rononibowagojebofojivoxar.pdf
    • http://wazuvit.rf.gd/after_effects_wedding_templates_free.pdf
    • https://s3.amazonaws.com/gopuze/best_android_graphing_scientific_calculator_app.pdf
    • http://zijomofi.epizy.com/balanced_scorecard_performance_management_template.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_off0000f685.bin
5eabf1486cc6318c3adcb5a6f025879cde2654a9c7f5def63e8913978b956b5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF685 5256 bytes
font_01_sfnt_off00010832.bin
83a70ee2b257e6a5aeccf49e0c12afa1d7e07e9ece34050d431fbf4a7e6cf713		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10832 11508 bytes

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