Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b8f459557abecb…

MALICIOUS

PDF

49.4 KB Created: 2020-10-13 13:37:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-03
MD5: 6c4a9c55034c31e44daae635e0338cff SHA-1: 62a365f3f4d300074560f7e1f42b47e2d5a7f986 SHA-256: 22b8f459557abecb407f3e0573e5414e32c18b6f058ac5c7739e407f486641bc
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/strik?keyword=phonics+consonant+sounds+worksheets In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/kizerapu.pdfIn PDF document text
    • https://site-1043395.mozfiles.com/files/1043395/20602127716.pdfIn PDF document text
    • https://site-1036695.mozfiles.com/files/1036695/75787915656.pdfIn PDF document text
    • https://site-1040431.mozfiles.com/files/1040431/40208887839.pdfIn PDF document text
    • https://site-1040145.mozfiles.com/files/1040145/wudolonolovitozakukugoniw.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/1/0500/4489/5392/files/467617423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1977/9227/files/dajubopoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7960/0794/files/guxosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5203/4969/files/21792466861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7875/6768/files/larajuveworojodazuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c270c470-b328-4540-bbf1-501ba8be0428/58080384385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed4be5a-d629-4db9-96c1-f20249e4b94b/gudikomoduxubofuwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40638870-ce76-4c70-a45c-f09aa5375a43/5156064737.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

Related samples 2

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_off000072f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F5 3144 bytes
SHA-256: f43c3c4636b252422b6484477cee2cb5f50e5c8ead4763327aaa57baef5b4787
font_01_sfnt_off00007e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E18 5152 bytes
SHA-256: d80323265c55124b69b78b656553045130738d5cf43d828b891f9cc6fab7642b
font_02_sfnt_off00008f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9E 12596 bytes
SHA-256: d265b5da53f2e6b7de6abacec6ed6bc8f49346c62d49697f65806592c2a62006

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