Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad0e654cb158cd1…

MALICIOUS

PDF

77.6 KB Created: 2021-03-27 15:32:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 02ab6ec86c08363f797510a8bf9556ce SHA-1: ee5d59f21a19b6437bfe51e44ea2efd80161ae02 SHA-256: cad0e654cb158cd1784f6718f859ba70bd7b066d4d3ee7ac21982de14c9b1c99
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, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a potentially harmful site.

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://jumiwimov.ru/wix?keyword=amazon+echo+apk+download PDF link annotation
    • http://vitrinachel.ru/18227496075vkl4u.pdfIn PDF document text
    • http://idealica-italiaofficial.site/cdula_de_rfc_con_homoclave_formato_oficialityz6.pdfIn PDF document text
    • http://garderob-podolsk.ru/how_to_spot_a_breakout_penny_stocknkuzc.pdfIn PDF document text
    • http://crawlmqyu.space/deloxofutevitalorotajazosiknz.pdfIn PDF document text
    • http://1xbet-registrat.site/foucault_the_history_of_sexuality_an_introduction4vljv.pdfIn PDF document text
    • http://idealica-italiaoficial.site/old_jaani_dushman_movie_songs_freez0efl.pdfIn PDF document text
    • http://bu-markett.com/diwebavar6nrsc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_f3e18adc4ab3437ca9a8e95c7ccf84c0.pdf?index=trueIn PDF document text
    • https://2f2ab42d-e0b4-4bd3-aa50-2430da1ff5fc.filesusr.com/ugd/eaf48f_6c035b87dd564310978aa8b0dd31f426.pdf?index=trueIn PDF document text
    • https://2703069b-a6ff-4ff9-983c-db139a8d76ba.filesusr.com/ugd/8b61cf_f5519629f25e47bfa545b951f02f5563.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kotidox/what_do_page_breaks_look_like_in_page_break_preview.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/instructions_on_how_to_use_a_prestige_pressure_cooker.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/31741337392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/445b44f9-9d64-43be-8e05-c7130f4f7b66/how_much_money_to_start_a_music_production_company.pdfIn PDF document text
    • https://68420551-d949-41c4-975b-2ae86aa6d062.filesusr.com/ugd/09c3c7_d3db2aaa5fd24243904a9837dad4c310.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9b67a2-9e8a-4149-8a12-34c1b29a92c2/pasazidopofajanig.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/angulos_de_elevacion_ejercicios_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aae1a2bc-af0b-4b59-ae24-bde8aa5ac87b/flowchart_tool_microsoft_office.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_off0000f133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF133 5236 bytes
SHA-256: d8a887026bf26a7fbe994936e49299ea657a65cc8b7db43cc0c14bf45cf6826b
font_01_sfnt_off000102f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F1 11292 bytes
SHA-256: 185d17b614086bb41bf060d9e208bbe77ba1987ca01287d20d87a36581663066

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