Malicious PDF — malware analysis report

Static analysis result for SHA-256 78256e1af684ea2b…

MALICIOUS

PDF

68.4 KB Created: 2020-11-19 09:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 47d24f77d623e748004d57959b5c0243 SHA-1: 7c409e77b9b241cf539ba1ac13fea937cc186847 SHA-256: 78256e1af684ea2b361e34ff09c49771da0c8d60988db02f0ef6f9e46c63b4b0
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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=dell%20emc%20vxrail%20e460%20datasheet In PDF document text
    • https://bibeluwevolaru.weebly.com/uploads/1/3/4/4/134497964/94b72fd199.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/gigulugow.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/sefepugolupalax/procreate_calligraphy_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03aab9f2-55ed-4065-a324-b13ebbae1c86/cash_flow_statement_format_and_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a3c0339-bd0f-4006-8005-ad179c0f6db7/23398538002.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/engineering_drawing_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c23a6fe6-86ba-45c7-a073-bf181373afc3/7368471734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be7e672f-867a-4afb-abee-ec41102974b4/goudy_old_style_bold_font_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/pointless_sites_button.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/security_management_in_cloud_computing.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/brgschaft_wohnung_eltern.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/bonejun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb41c86-a721-4567-9c36-a3dfdf2e16e6/68041494068.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/gumudije.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_off0000cb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7D 5688 bytes
SHA-256: 6c121a74e81af3bf2f1f34adaff01e145f7d16a5b431d3980df234669580f5e4
font_01_sfnt_off0000deb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB4 11216 bytes
SHA-256: 565d95d92265c5a6792080264376105ca8c5678e61a15f212cd4ac1dc2d3d7d6

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