Malicious PDF — malware analysis report

Static analysis result for SHA-256 74595665d5b9035d…

MALICIOUS

PDF

87.0 KB Created: 2021-05-30 23:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e5370f1fa5c42598d476c74d644f03e7 SHA-1: 521671944cff5bb83ac8ee67c2578d91026c3bfc SHA-256: 74595665d5b9035d58567714a1b1e1f059a076de246512dfed1ecffa82b43902
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'botokaw.ru' suggests a phishing or redirection attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI are strong indicators of a phishing lure, likely intended to deliver a secondary payload or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/wb?keyword=audiovisual%20caracteristicas%20del%20sistema%20politico%20mexicano PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371266/normal_5fee3454929ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425229/normal_604131c993607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473938/normal_6027c41b9b8c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413013/normal_6054f50daa2b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5fd1444a410f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450003/normal_603c70dcbfb26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421781/normal_605f5ea5014f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373517/normal_5fc69c7ae595e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412768/normal_5fdab5134edc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_6044d683089c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489846/normal_5fe22234e26ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367680/normal_60133e1614839.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466151/normal_5ff33455cbe53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493597/normal_5fea21d6dc9fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473637/normal_605eebeda55b6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae424a87-fb25-401b-abe9-12bfb4ba3980/ejercicios_de_balanceo_por_tanteo_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a407d907-90fe-45ff-ae83-b18250147b49/descriptive_words_that_appeal_to_the_senses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c534a50-2098-4b68-bd8f-f672f77ab1d1/mercruiser_350_mag_mpi_service_manual_download_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16507306-0b9a-46c8-be61-727bcf1a3420/wemoxikofenurer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9fa5228-c914-41fd-9940-4f1266e1105c/narizemejeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29c031c0-1c2b-41dd-aaae-ec8f64d8388e/85102761028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc0bb01b-ea01-4c0f-b2b1-3795a94865b7/lokupafiwakikogu.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_off0000fbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE3 5336 bytes
SHA-256: a9d2facfee89e0e681d4fdb118f8b7fe06197d680e414674af407acd8c5c546b
font_01_sfnt_off00010dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DFB 12484 bytes
SHA-256: 1a42f749aa8ede43bfbb13188268d06e5383a54960bfade9acb1d273fea7722b
font_02_sfnt_off000136c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136C5 16168 bytes
SHA-256: bcfecb9fde4b74e4a2b692e15caf305b2988a1cfe4c6386614002e38d35feb86

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