Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99666e361673f91…

MALICIOUS

PDF

69.6 KB Created: 2020-12-11 09:05:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-13
MD5: b58ea8d6032d11e2152ab5de111e60ea SHA-1: 5894b725a99177cee6c8b69b6e97c973d8dde197 SHA-256: f99666e361673f91154498d5721daa0bb385535f7377bbf3f0f74b4b7390c1e6
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=best%20dance%20dj%20remix%20song In PDF document text
    • https://cdn-cms.f-static.net/uploads/4488804/normal_5fc17733627b3.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/subud/94101002032.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4b10f81c9a2a0c984160/1606372113285/zizolexigonoreninunukiwi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6941c1452f90b7f0c5d7b/t/5fd078b43364176a125d3740/1607497910097/infectious_disease_doctor_staten_island_ny.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/wosemesusibima.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0c6a72f8b574a0f573c5/1606225002660/tofef.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12744239b07229132d4f5/t/5fcea4cb7bca2b4c4f2bd7a2/1607378124117/fomizafikegizarez.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c6032e34347c70505203/t/5fcd8608f94b6402b2326941/1607304713101/61354140936.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/96818787572.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_off0000d4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CF 5420 bytes
SHA-256: 2b6924cf9f4267c3bc4e56b0abdf19996a960b6829b7f5c154281a6fa0066e20
font_01_sfnt_off0000e733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE733 10508 bytes
SHA-256: ad59695fb190e79ce11c572ff40764ad40b6d88074bea8c5ba52501239369bc7