Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e326bbd91139481…

MALICIOUS

PDF

42.7 KB Created: 2020-10-07 23:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 6ffb26792856be9270c864fe6d5c0fe3 SHA-1: f509320d0e95bc7db046241a8870fe2b6d295ddf SHA-256: 4e326bbd911394812704d8e932a5d2c0ced6ca88c99c68f97f2a6b8b393173d7
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=lifesaving+society+bronze+medallion+test+sheet In PDF document text
    • https://site-1040293.mozfiles.com/files/1040293/dusijakezegi.pdfIn PDF document text
    • https://site-1040327.mozfiles.com/files/1040327/54422061262.pdfIn PDF document text
    • https://site-1036981.mozfiles.com/files/1036981/1746068627.pdfIn PDF document text
    • https://site-1042541.mozfiles.com/files/1042541/60545608313.pdfIn PDF document text
    • https://site-1043884.mozfiles.com/files/1043884/34824405076.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e853896-48c8-4bde-b91a-8a7d1c9149df/60862216984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa0b4007-3cba-41e2-b844-cbdd5d6a6e2a/borumozedolagusemose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/608e9c97-4893-43b4-a1b7-4f28c45624ce/nifutitajodileje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6374536a-ebda-4c64-9679-65777ba9dca3/zolifop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9b5603d-6212-4fd5-b557-9bd12f3fc4cc/bogoganejebumine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cc7f92e-61d2-4e6e-a30c-076668fd6a2d/sopirivebominemeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3752/2085/files/munchkin_collectible_card_game_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2909/8396/files/fixiwazewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/zuzedamepola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7679/1719/files/27828385624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3496/files/bawuxadiv.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_off000066fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FC 5728 bytes
SHA-256: e544def3e915b9092be94c9d36f7c8140483f629e2ee73cc6333e5805ba3d254
font_01_sfnt_off00007a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A69 10300 bytes
SHA-256: 11a149077025a0f573cd3781f3b547f9881048f7e52df844cd100cad0a71ee1a

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