Malicious PDF — malware analysis report

Static analysis result for SHA-256 fedf4973015a7b73…

MALICIOUS

PDF

70.7 KB Created: 2020-12-30 14:00:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7e0ca13c4801ad68dedbd6638297f6dc SHA-1: 9da974a0ae66ebdca9bf34a89bf6a7ca20d99da4 SHA-256: fedf4973015a7b73a6465517f11b6e3c84b6cdf86dace9777f7140143b9c0574
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=electricity+meter+number+lookup In PDF document text
    • https://static.s123-cdn-static.com/uploads/4378153/normal_5feb9d5456f80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417140/normal_5fab3cfd207d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387925/normal_5f8f2c06d7772.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5fb8b09084fb0.pdfIn PDF document text
    • https://cdn.sqhk.co/pibegufuxova/hhhhjD6/logo_quiz_answers_level_361.pdfIn PDF document text
    • https://cdn.sqhk.co/jebixusugak/CghEoVi/the_very_best_of_the_eagles_album_cover.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374851/normal_5fec4cd846159.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/sicbihi/bavixuloxasawovumigurusa.pdfIn PDF document text
    • https://cdn.sqhk.co/zusisoko/hN6OghL/jakajexowefaj.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/gjgYUuY/furia_de_titas_online.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/ZijigB1/93833275759.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/197d1f44-9de5-42f5-b18c-6036f50b9f38/atomic_structure_worksheet_1_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0133eeb5-1363-4dd1-99ea-edb89db4502c/why_are_unicorns_healthier_than_dragons_worksheet_answers.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_off0000d809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD809 4956 bytes
SHA-256: f758d2d2845bfff8d3811990077bafe7ef7a70aee9de0ff2b22f32871ec42090
font_01_sfnt_off0000e8dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DD 10928 bytes
SHA-256: 6234a33890609ba84b6400b5e1380d8eb6e4cd61791f69ecf4e5763ac8c85fbc