Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c6ea6f63a74ad6…

MALICIOUS

PDF

69.6 KB Created: 2020-12-28 12:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4eb314180b0d8d4e418338fd796acc40 SHA-1: bed22d6d569dc2a406f30e3b4b0e5cf373fc088b SHA-256: 97c6ea6f63a74ad61aac4963bb88add08d12816f0e3318d7cd30c4c7330458ab
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffine.ru', which is a strong indicator of phishing or malware distribution. The ML classifier also flagged the PDF with high confidence. Although no scripts were extracted, the presence of a malicious URL and the overall context suggest the document is designed to trick the user into navigating to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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
  • 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://traffine.ru/123?utm_term=khan+academy+circuits+and+logic In PDF document text
    • https://cdn-cms.f-static.net/uploads/4482020/normal_5fd262542af9e.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/jhifuhc/troom_troom_espanol_zombie_apocalypse_episode_11.pdfIn PDF document text
    • https://cdn.sqhk.co/setinapas/ghghnzO/pibuvivamejinebuwe.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/pSgdahi/the_tiger_poem_william_blake_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_5f95ee97b1743.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377909/normal_5f8a050ed1067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382613/normal_5fbf06351d344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482629/normal_5fd876fc62655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424645/normal_5fab1d497c442.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479904/normal_5fd165e9451ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477620/normal_5fbf1c87de1e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5faad9858ecd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494165/normal_5faa937149346.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/tibanepoxilibud/black_clover_game.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/internship_project_report_format.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_off0000d3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C6 5424 bytes
SHA-256: 460703e8b46a948bbc20c1b1e59ca5c5025be7f27bfd5a83645575e02d1fec59
font_01_sfnt_off0000e619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE619 10372 bytes
SHA-256: bed8e35929f2dc44be0c84b43f90f27e93ae5c21decfffa7b8f8205c11b7a9c8

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