Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a24800e16d6e4cf…

MALICIOUS

PDF

80.1 KB Created: 2021-03-25 08:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 5fd5b3a9df436c280ce74c23e0f92dd1 SHA-1: 349684c64c6ea7c3f323ebec4aa40dcb35a20cce SHA-256: 9a24800e16d6e4cfcc2be83a1059f9ffb335dc3dfdf33a6995e75630f9b2464d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. ClamAV detection and ML classification strongly indicate maliciousness. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure, likely designed to redirect users to a malicious site for further exploitation.

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://nipisod.ru/award?keyword=alcalosis+metabolica+en+ni%25C3%25B1os+pdf PDF link annotation
    • http://zegiwire.sportsontheweb.net/dudejejexawut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409405/normal_5fe7f9f95aba3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368985/normal_5fd2a407d1f3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_602ab2215a075.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/ajhEYjf/emergency_dentist_brooklyn_services_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/rudixika/v5ig6gj/petroleum_engineering_salary_in_us_per_month.pdfIn PDF document text
    • https://cdn.sqhk.co/puxezuxivas/ijA2Xhe/37732487414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5fd27d2d9781e.pdfIn PDF document text
    • http://ravigimojamel.mypressonline.com/quran_with_urdu_translation_word_by_word_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gitaligido/jbgfIju/ikea_design_your_own_living_room_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386834/normal_5fde346069c00.pdfIn PDF document text
    • https://cdn.sqhk.co/lisutovudaf/hoXtjbw/burger_king_nyc_locations.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/webipejonavuv/41547966934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/328d8a18-05da-4f1f-9ee3-5a1d8c064e16/86664579157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01d67284-6214-4280-b699-930a2ecb3a01/783715499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd7d9725-aaa4-46bd-9490-7eee64207588/medios_de_comunicacin_interna_en_una_empresa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0835fd88-c54d-4c55-b992-c8d0e455b0c2/how_to_use_aa_battery_charger.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/95193168597.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/68572033503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eafa751-8b44-4124-8adc-10a2519ca582/cien_aos_de_soledad_resumen_capitulo_18.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d229a680-38b3-46df-b19c-3afa4e9afcf0/lg_washing_machine_repair_service_centre_pune.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/competitions_guide_today_tonight.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_off0000f7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E3 5548 bytes
SHA-256: 61dbbda19d4b2f40fbc03a267592293c7d1c8517b49ac8c15e490c1270f6e01f
font_01_sfnt_off00010a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6D 12032 bytes
SHA-256: 8757e5c1166cd68dca9b8563d28127317c26d12d71f4781d373d18af309d4f00

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