Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d81a446b235c2a7…

MALICIOUS

PDF

69.1 KB Created: 2021-02-17 01:47:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 38e329707cb949c2679852500b5f12b8 SHA-1: 0cbae52fe0446c85edb4455e01931152bf549c25 SHA-256: 5d81a446b235c2a74dba8fc7263adf31f28f5fc69ab5050312bd9b66d6b3628d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://leonvi.ru/wb?keyword=how%20does%20boston%20market%20make%20their%20mashed%20potatoes PDF link annotation
    • https://cdn.sqhk.co/sunawopi/djf8jjb/rixazu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5ff63521eb35b.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/7Ejfjgg/knife_master_money_game.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/9DWgd8b/life_is_strange_chloe_room_stay_hidden.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413111/normal_5fdf16e3ae81d.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/3Bjjwic/23822908999.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/g5j7ijc/bilolutedejopa.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/aBh3Vji/zudijiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445557/normal_5fde3c8064afa.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/hahruhe/nivuratipiworesev.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/ganubifirigevi/larisiwopakapejadir.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/announcement_icon_free_vector.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/depanasuruxedutuvuxudixub.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/asunder_cd_ripper.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/75969648216.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/39082121325.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/98003037747.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_off0000cffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFC 5424 bytes
SHA-256: 9c54a6496af94a9e5bc2dea0799b82e61411f99c3a507013164c3ebbcdfbf6c7
font_01_sfnt_off0000e244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE244 10752 bytes
SHA-256: b4cdc3f3690e119b697eaf523429a873c79f71706c4c563688a4d3c0dd8ba6e4