Malicious PDF — malware analysis report

Static analysis result for SHA-256 634e7176793f79ea…

MALICIOUS

PDF

46.7 KB Created: 2020-10-04 20:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-28
MD5: 7bc47a9e7c443cd27efa7b9bb9b5fdb4 SHA-1: 9e9fd8a0770168b5d7310f90a1fef93a8930652f SHA-256: 634e7176793f79eae8514dd9e5225895a1b83d408ea06636de25b28d41239085
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/strik?keyword=big+fish+and+begonia+piano+sheet In PDF document text
    • https://site-1036667.mozfiles.com/files/1036667/zorobudusirugijufipa.pdfIn PDF document text
    • https://site-1041079.mozfiles.com/files/1041079/54354683006.pdfIn PDF document text
    • https://site-1040032.mozfiles.com/files/1040032/89495174311.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000062c7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000062c7.bin)
    • http://fedorahosted.org/lohitIn extracted file (font_02_sfnt_off0000983d.bin)
    • https://cdn.shopify.com/s/files/1/0440/8606/7352/files/canon_mg2522_driver_unavailable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/0663/1325/files/btd5_mills_eagles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/transformations_multiple_choice_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8361/2831/files/98581526294.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc844403-48b1-4a38-aee6-5806addcc78c/17286937245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd97ce4b-c13b-40f6-b4e1-a4d190676086/nomawukiximinaneruzimamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b91931f5-eade-4bcf-9617-ea4011e296b9/podixofexuxuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dce374e-782c-493b-add5-40f5786814a8/99265199624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66cfead8-63f8-460b-acc7-b406667099aa/nejuxukep.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 extracted file (font_00_sfnt_off000062c7.bin)

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C7 5364 bytes
SHA-256: 6cf97db6546e342cbd2cf240398b4c2d1d1f88725559c0bc725023f4c50acb98
font_01_sfnt_off00007510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7510 10264 bytes
SHA-256: 034869be509d91714dba1cd3b362a8629ab0b72b4323105c4c75e1d91c2e02d5
font_02_sfnt_off0000983d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x983D 6040 bytes
SHA-256: 58855dcebbf92982c9d7a32130b868244654a451de3d6d6e54f5d063c16e3927

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