Malicious PDF — malware analysis report

Static analysis result for SHA-256 478e0578fbddc26e…

MALICIOUS

PDF

74.2 KB Created: 2021-02-16 16:49:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 838536de120bc6bc70146848b928b990 SHA-1: 63d933be2ae09a8fbc897fe7417cfdb46c7ec4fb SHA-256: 478e0578fbddc26e2aa34417db8c5e19553abf6fe3fcef8d44415a904ed01d15
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://maypoin.ru/123?utm_term=these+happy+golden+years+reading+level PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413843/normal_5fecccf6619a4.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/eggE1cD/87506088169.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380382/normal_5fff6021bcd5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383147/normal_5fdd2903a2031.pdfIn PDF document text
    • https://cdn.sqhk.co/zapiseniw/hbnhfSD/17337658309.pdfIn PDF document text
    • https://cdn.sqhk.co/nigigeje/NThc2Mc/32829051113.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387928/normal_5fc599cbe5d2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445558/normal_6016bb4c31f12.pdfIn PDF document text
    • https://kagesurofuzesik.weebly.com/uploads/1/3/5/3/135303772/9047283.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404133/normal_6004bf1b70f1b.pdfIn PDF document text
    • https://kanevedodusuwa.weebly.com/uploads/1/3/0/8/130814441/vedalejalenud-velojatajis-gofasirufuni.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/jcsgdwZ/child_care_tax_credit_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/lozosasuxe/ihghiZX/gumulavuwutapaxufi.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/jedobufudajewu/certificate_attendance_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/23827525715.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/animals_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/bawal.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/english_grammar_article_writing_format.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_off0000e56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56D 5332 bytes
SHA-256: bbf1345a0d117605e807717c3207fda700dedb1795811cab6fd83b04541dc01c
font_01_sfnt_off0000f795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF795 10548 bytes
SHA-256: 54bcb0d0829dd044c73e15100ce9d40a6d75e507157082923c8b6a927c9d7bc2

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