Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bacebea6c517b4…

MALICIOUS

PDF

67.0 KB Created: 2020-12-03 03:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: ad5a705138f19fd41d7142f55732fc02 SHA-1: e9b284ef5abdf18cd5236edfb721f87109dc5b6c SHA-256: 72bacebea6c517b4ce7c72bfe5e50d0e3264ae36188e22ce3631500a10ecdbed
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/wb?keyword=self%20employment%20certificate%20pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416798/normal_5f966537e2767.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466135/normal_5fc6bc1be64f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e99a0a2757459be2ef6a/t/5fc56574173fb5383b58b203/1606772085405/11117659018.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/columbus_movie_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/84682551204.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/nonurebafidekijusumujup.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50966f7cf8c7540456227/t/5fc59508145a8629dc713057/1606784265189/nikon_scope_lifetime_warranty.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0026eaf37e3b64623217/1606287399373/bobanuvesuna.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/74877679970.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/fudumaxivasinigosobuz.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/55894776969.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/miwowanevukatutusux.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e9e3bda9c57a97be47bf/t/5fc13293173fb5383bcdb84e/1606496915941/doe_medical_abbreviation_quizlet.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_off0000ca7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7B 5328 bytes
SHA-256: b2683667dcdfb62f0134c0f234cc8694e33bdca1adf901b75021cbbfb43c1cff
font_01_sfnt_off0000dc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC94 10252 bytes
SHA-256: efdbdcb4b0a1df673302a1284f92bc814115d41ba754a7360f57de8f59aa5139