Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b63ca58872ee134…

MALICIOUS

PDF

46.9 KB Created: 2020-10-28 01:45:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 5b4b5f4b38ca430e24f12e06609ed2e5 SHA-1: 0d8b77247fa73c5cda5d0e1467804c21a695932b SHA-256: 2b63ca58872ee13443b3af1c640e1766786ed354dfc5093957e6fcab9de907ec
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/wb?keyword=vinyasa%20krama%20pdf In PDF document text
    • https://gogekelonirivi.weebly.com/uploads/1/3/4/4/134438841/nizinonid-gisezekex-kobitabif-lusos.pdfIn PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/sopaxoduwojorojobu.pdfIn PDF document text
    • https://xemivigezeb.weebly.com/uploads/1/3/4/4/134481563/lodulisabed.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/8385795.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/sonagikasor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2675/0881/files/example_discussion_lab_report_biology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2043/5623/files/14759322444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1384/8219/files/mulapobutowepezerazofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0555/6908/files/32688133211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1827/files/35763535637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0334/5558/files/33139345717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7070/8129/files/wadegepejakew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7043/7016/files/scientific_notation_day_1_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9171/3447/files/54208722781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2535/6184/files/71695660879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6186/9214/files/edmund_burke_a_philosophical_enquiry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/4460/6630/files/allowable_bending_stress_timber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/8038/3385/files/reflector_3__android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eaa5ee9-5e83-407c-b5eb-eeaf44499058/harman_kardon_avr_645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbf869d4-50ce-47c5-b56b-f2fd65fce4ac/rutisiximi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37c83e64-5131-4f75-b400-70fc5e1595cc/nutuvekarulezejezaluvak.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_off00006c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C54 3488 bytes
SHA-256: 4f41634859431d2a30b3bac735d338f4a5128e161686d69135f3255a50f3becd
font_01_sfnt_off000078dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DC 5284 bytes
SHA-256: 246d7ea1854e8f7b6700d4372124db06bc55417f7a86d09b9973abca2dcf159d
font_02_sfnt_off00008acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 10388 bytes
SHA-256: 2aa96f0b5ad8269b053509e01e783dd1d192a5ddb3b0b7a9d9c8761243461d57

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