Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afefab56d37d4b5…

MALICIOUS

PDF

64.9 KB Created: 2020-12-13 19:00:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: c8fa5dd5cd41d8d487603b359b56cd6d SHA-1: b2bc202eb3e2c90faa126f34d3a8f951be8000b4 SHA-256: 4afefab56d37d4b538ad3543fea8e0e6ef6b5ec76128268e079787453cae7acf
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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
  • 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://traffset.ru/wb?keyword=bareilly%20ki%20barfi%20full%20movie%20%20mkvmoviesking PDF link annotation
    • https://midusafamiriron.weebly.com/uploads/1/3/4/7/134702540/5b387e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476941/normal_5fb5d0045aaca.pdfIn PDF document text
    • https://nusoselif.weebly.com/uploads/1/3/4/4/134470887/furonejato-towan-kixuxub-fokilokuxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422371/normal_5fca7820ebe8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fizup/application_form_scheduled_caste_certificate_west_bengal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59aeaea4a794d566534d6/t/5fcb475964036b61438ad62d/1607157593837/lomatedodabonagenalabad.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4dcc35687f52b6b9a9a8f/t/5fce12f024c49707d3462df7/1607340785126/zaruruxenoliwav.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/belhaven_best_nutritional_information.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc115bd5e8e827d428ee316/t/5fcef15d3fa051062b3afb8a/1607397725802/download_music_video_editing_software_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/79533748743.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/doxixowadusexit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3925768612547ed6ec367/t/5fc86af2ee804a17a1d12fff/1606970098839/74113897305.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf594bf8cdb769c6da0926/1606375755891/uniden_cordless_phone_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB366 5304 bytes
SHA-256: 52bce7e592eadb00b506667a3af953e4758f565831c3d267380a3ebe1f60854a
font_01_sfnt_off0000c569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC569 10356 bytes
SHA-256: e187b396b514c97d21ce85b38c5c12631062d4575258a275243f39dda9d461b6
font_02_sfnt_off0000e8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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