Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b0cbcbf8dd19fc…

MALICIOUS

PDF

65.0 KB Created: 2020-11-14 01:24:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 680a32d82050c86391d9d028629d75a4 SHA-1: 26377002985d9302e11898d45ba236958f1946b0 SHA-256: e3b0cbcbf8dd19fc6f7bdae3d632c08af420e5481017b66fa70181a4f06f883e
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffe.ru/123?utm_term=web+services+interview+questions+for+testers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373769/normal_5fab6048a34bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_5fa993efaf314.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_5fab72e6837ff.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/202671d7-8969-4dc8-9f36-5d4b3ab791b4/81888857366.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/90063062325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db35e7c-c136-40c2-8092-d1f04fac60ec/bidobagasezifikobise.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/classic_context_menus_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e260fb7a-91a3-4e3b-8b73-2b59eb601d47/nanosul.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/demasubarafisulosub.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/airtel_dish_tv_channel_number_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c0c7b17-ebde-46be-b140-d66c33bdf72b/pijugikepimo.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/domamunigep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fc89a40-cd8b-4556-8465-349332159e8f/95939766181.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/wixajiruzedi.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_off0000c75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75F 5064 bytes
SHA-256: d860811f16ed4ef1cb9870582d188cf95643ad685a0da28ffa35f46d95a3b0c3
font_01_sfnt_off0000d8d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D1 8940 bytes
SHA-256: 5f8c6b9213c3962a0f01bf208a27cde5be80ff96128f9df2f678274dca8be4e1