Malicious PDF — malware analysis report

Static analysis result for SHA-256 af23fb1c9fb8dda3…

MALICIOUS

PDF

69.9 KB Created: 2020-11-11 19:42:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 41739ebe68ec5b86ce44f442e1fce10b SHA-1: 642a842c3608e419ec973f33a4f39aa46973603a SHA-256: af23fb1c9fb8dda355a72ffa816d0932d0df3f7ca82b4faecfbbca3230604d98
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=pokemon%20ultra%20moon%20post%20game%20guide PDF link annotation
    • https://terifurarogo.weebly.com/uploads/1/3/4/3/134317228/zubejul_gutezabesugew_taxefo.pdfIn PDF document text
    • https://dibozavo.weebly.com/uploads/1/3/4/5/134501923/3f0990839a.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/6775362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475859/normal_5fa5e2741058b.pdfIn PDF document text
    • https://lamuvoraraxuz.weebly.com/uploads/1/3/4/4/134486612/2640682.pdfIn PDF document text
    • https://dulowufokupi.weebly.com/uploads/1/3/4/4/134495444/feef2e.pdfIn PDF document text
    • https://zeteparikimifol.weebly.com/uploads/1/3/1/6/131637109/c016c38009c12.pdfIn PDF document text
    • https://dewubolisevibe.weebly.com/uploads/1/3/4/3/134318954/zepatolomusimu.pdfIn PDF document text
    • https://vaxeratomox.weebly.com/uploads/1/3/4/3/134397216/wajepi-vomusare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f95960b38ce5.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/gaxuremewuger/manual_for_bowflex_treadclimber_tc10.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/xalovilefupidu.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/gifoxidoveworutuj.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/ask_md_website.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/google_maps_terrain_view_in_google_earth.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_off0000d272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD272 5344 bytes
SHA-256: 81fec0be14b75e23482ebddc6f2b88413d430319d292b06e7ea2489c959bd629
font_01_sfnt_off0000e489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE489 10844 bytes
SHA-256: b76dabfcb3fde2f6434900f1eee3c1d725de13448b52b9cebae84b527ac94e12