Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be63806494301f3…

MALICIOUS

PDF

106.3 KB Created: 2021-03-18 15:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 61f4772f2c9475ed0f8110a2b39f8254 SHA-1: 7403bec3f41b53b1098f0b6edaf4f7f7d9064961 SHA-256: 3be63806494301f31746418b4aaa5d1291d3b91a33186fe380006b8efca5dc12
104 Risk Score

Malware Insights

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

The PDF contains heuristics indicating external URI usage and a visual download button, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the overall context point towards a malicious document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/strik?utm_term=urdu+to+english+paragraph+translation+exercises+pdf PDF link annotation
    • http://domastmsk.space/486565487487t2qx.pdfIn PDF document text
    • http://natur-bio.space/54070825143fwsqc.pdfIn PDF document text
    • http://copyrightsupporteds.com/putogavafedonipilubonikgpc.pdfIn PDF document text
    • http://dkblogin-de.best/daxoreveremojodezit5slv8.pdfIn PDF document text
    • http://familyit.pro/jafelufime9nfge.pdfIn PDF document text
    • http://duvejajenivogik.getenjoyment.net/xufekunajogovusibadepamip.pdfIn PDF document text
    • http://azules.ru/matefrrwwx.pdfIn PDF document text
    • http://pelistens.xyz/61578592856jasqa.pdfIn PDF document text
    • http://neditaxuvim.getenjoyment.net/81836429049.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/livivuvuwugeb/brche_krzen_erklrung.pdfIn PDF document text
    • http://sajoveguduv.onlinewebshop.net/cholecystitis_2020.pdfIn PDF document text
    • http://liwetagosozel.onlinewebshop.net/37253434935.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/havering_sixth_form_college_dress_code.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/28453378487.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/exponential_equations_worksheet_1_answers_key.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/dolisofiseveko.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/35584368873.pdfIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/quimica_organica_john_mcmurry_8_edicion_descargar_gratis.pdfIn PDF document text
    • http://kamigawox.atwebpages.com/conectores_en_espaol_para_redactar.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/26640371389.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/ar_15_mag_release_button_and_spring.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00016c4c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16C4C 26952 bytes
SHA-256: d30cc7354d1aed467a5fb611baf007b4c4fc158249ae93c31598211dab1f2f9e
font_00_sfnt_off00012f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F22 5476 bytes
SHA-256: 02db5133966ba6946434f663acc7ff39d589a72fde7e90e525a6cfe57af2ef87
font_01_sfnt_off000141c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141C9 12920 bytes
SHA-256: 8029a387bd3436386be1782cb641a814b0757ed4a7255115fd85944d1936dfa1

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