Malicious PDF — malware analysis report

Static analysis result for SHA-256 941a2d8ce539b269…

MALICIOUS

PDF

52.0 KB Created: 2020-10-22 21:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: b48ef9847f58da1bbe0892db6531575a SHA-1: 326e70e8eadfcb0495d65e53a7c8c96491d67b7c SHA-256: 941a2d8ce539b26945854c8674b581345d925fcc2a8cc7a95312f7ac7078116c
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://ggtraff.ru/wb?keyword=devanti%20ice%20machine%20manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f86fabed5d3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379848/normal_5f8b2e67d0a94.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://uploads.strikinglycdn.com/files/fb3df723-ae1e-4a30-9acf-169ad6ed1c82/roku_pago_mensual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad519d82-5fd1-475e-a3d3-453415003cc8/kupuroven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08af75bd-bcd5-4f3f-b76e-1a6d0060a398/kifevegalawobawigisuziv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd3e6c97-0a32-4340-a92a-20c86f5522a9/gipesirezesujifubevobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a359a616-e67a-411a-aa02-3b9e6f2a075c/love_boat_season_3_episode_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd032539-1246-4a99-b398-fcbfd608910a/90609737750.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad1cc99f-6db5-4ddd-85aa-bbad0672f612/tojivirewuzeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ba4a815-c8c4-4c44-bafa-ba03eee5db08/48834787348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/arthrocare_coblator_ii_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7967/4272/files/in_my_arms_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/0828/3552/files/full_download_manager_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bufedaki.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/kuragusofixixid.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/59182837863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc49239-ff37-4408-a6eb-18407ab2b895/99632469966.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f54431e-792a-4c39-8eee-5c7a7c480b05/96376432475.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_off000081b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B6 4596 bytes
SHA-256: c3e50c2d3e906aca6beaf8b85c27aa5da953c284d85a58c961800b634a922e3b
font_01_sfnt_off0000912e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912E 10320 bytes
SHA-256: 7a515d9e9b553c12f96622e95621ed53f4e1651e0e4e79881ee562888aa5f78f
font_02_sfnt_off0000b47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB47F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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