Malicious PDF — malware analysis report

Static analysis result for SHA-256 7615b994229196e8…

MALICIOUS

PDF

77.0 KB Created: 2020-11-23 20:31:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5adb0b6fef7c29565465f1674b644e72 SHA-1: bcb3290e1b73447b06650347fae629445cdd5bc8 SHA-256: 7615b994229196e82a09a42eab3632b5d920d663a07bcd37c07dd60291a68032
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffi.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'Imaginarium train table mountain rock'. No scripts were extracted, but the presence of an external URI is a strong indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/123?utm_term=imaginarium+train+table+mountain+rock PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459027/normal_5fb9849818fbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5f97238b7dda0.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/pajeriramal/this_is_america_lyrics_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0ae425f-c179-4cb2-83da-0ac90c76f80d/gorujagutofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5342cb03-6e87-4afc-b092-d151ab69a6dc/99198988656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55e4009-d4e4-451a-88f2-2662e83751a2/form_1040_es_payment_voucher_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a165d6e0-5107-42a5-afb7-32a81bcbfb15/descarga_gratuita_de_velamma_episodi.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/95254895749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17487a51-5cd9-4caa-bb9b-16fdafe1eddb/las_pruebas_de_apolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24648445-90a2-4f22-8c8e-ec4409cc06e2/lawitofakes.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/1635380314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b314da04-1f0c-45da-a3a8-d3ebeff9d046/67604837789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f29564-1f7c-4c35-bcb8-a77df2ef59f1/lejilisunup.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_off0000f006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF006 5084 bytes
SHA-256: 80217cf57e624bed4853690e9aaa02de1541873d693ea82cece348df9d589216
font_01_sfnt_off0001013e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013E 11056 bytes
SHA-256: 8d2b247e96384266a2819589de6fa34667efa756a980114e075d8c45cd65c1b2

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