Malicious PDF — malware analysis report

Static analysis result for SHA-256 4451424d8fa44664…

MALICIOUS

PDF

41.1 KB Created: 2020-10-15 20:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 95aac1a0e0808a71b07a2f259fb73da5 SHA-1: 1228b692f8e9fd4b61f215a767a732391597e293 SHA-256: 4451424d8fa44664e0541805f866aece7b7c2ba72ffb279118e3cec0b97c2389
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=made%20ridiculously%20simple%20pdf In PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/xoteramerosikaja.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/zuvakudiverawugin.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/1a27643b41869.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/36ce75ac.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/1302795.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/7ab649c307f4d.pdfIn PDF document text
    • https://tudupumodowi.weebly.com/uploads/1/3/1/4/131406798/guteporakew.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/lokujevu.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/1/0429/6274/7545/files/violin_tuner_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9536/8888/files/71732327455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8158/0188/files/gelogadur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/class_feats_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1695/3767/files/80241354348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2089/3864/files/ratto_law_firm_oakland_ca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7036/0225/files/san_joaquin_county_map_program.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4086f2ef-9345-4c03-aa94-a83eac03a772/2449373660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b5bc629-7db9-4a62-9e05-044881ce590f/retenonodozopasalejeruxuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df1e29ff-f97e-49c3-a2b9-00adda573e9c/fisigetetulaxu.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_off000063e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E5 5408 bytes
SHA-256: 82437d1f1683cb51797a3b151b9e55834b932d8f0e6e943df69312e0e91bf3e4
font_01_sfnt_off0000763d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763D 9772 bytes
SHA-256: 08c61d05e32b3ac6dd0dc79498cdc524873677885b84de516047a2d11febfb0f

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