Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8967c934d84f140…

MALICIOUS

PDF

74.7 KB Created: 2021-03-19 05:22:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2b4a58d59151937f93c22f6cfb28d353 SHA-1: 53db2d4052db60a5a153a823c71d4c57c4a0933e SHA-256: e8967c934d84f14096e4f799246fc697b4fcb92ea6aa7cfde854a4dfcc0efed1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://leonvi.ru/award?keyword=adding+simple+fractions+pdf PDF link annotation
    • https://cdn.sqhk.co/miraroki/LjeZsds/20444693638.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482860/normal_5fe9ca3186c90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390995/normal_601718dbbef76.pdfIn PDF document text
    • https://cdn.sqhk.co/fubafonu/8hhhjia/draw_out_meaning_in_bengali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417049/normal_600ef62aba088.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/chbiaiZ/infinity_symbol_text_generator.pdfIn PDF document text
    • http://boburokopuxixud.iblogger.org/tipos_de_anemia_hematologia.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/dugibabafod/steal_this_book.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/air_france_klm_annual_report_2013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be345846-cf06-426b-bde3-182783f2c178/dubizosipejisowoloro.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/vovanozisurozutuvisisix.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/sorotixe.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/splash_screen_in_xamarin_forms_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae4de64e-5613-4043-8ca7-22f1e4ac3b33/romeo_and_juliet_act_1_scene_1_questions_and_answers.pdfIn PDF document text
    • http://naxepatixotilu.rf.gd/digital_integrated_circuits_rabaey_free_download.pdfIn PDF document text
    • http://miwuzira.epizy.com/power_of_thoughts_swami_vivekananda.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/73235959386.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/is_hela_the_daughter_of_loki_or_odin.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/nemamejulufokol.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/56304339008.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/averroes_decisive_treatise.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_off0000e56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56D 5464 bytes
SHA-256: 45cf2a9b85dadc91227c39927c2ca652f7ebc317bad7d674ea961139217a181c
font_01_sfnt_off0000f7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F0 11128 bytes
SHA-256: 7f5ab1012f4ab095b29ab54cfa0dee26d2cca498645cbd296b5c39a5ef22da20

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