Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7da8bbc944c8d22…

MALICIOUS

PDF

45.0 KB Created: 2020-10-03 03:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-27
MD5: bd6ed4e570e4bfb5d74fae26602de061 SHA-1: feab97755af32ee2baf20cdf97536b5d119b6bfa SHA-256: c7da8bbc944c8d224cce16fa25d08b9fc8322fdaf0dbee3a65717341d3c0e5e6
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=canon+mg3100+series+printer+manual In PDF document text
    • https://site-1039583.mozfiles.com/files/1039583/lineki.pdfIn PDF document text
    • https://site-1036679.mozfiles.com/files/1036679/28275206938.pdfIn PDF document text
    • https://site-1037839.mozfiles.com/files/1037839/75981889901.pdfIn PDF document text
    • https://site-1036734.mozfiles.com/files/1036734/gunefakizotefubadufazu.pdfIn PDF document text
    • https://site-1036898.mozfiles.com/files/1036898/12980079913.pdfIn PDF document text
    • http://files.ryanjweaver.com/uploads/1/3/0/9/130969850/5404180.pdfIn PDF document text
    • http://files.lucylordauthor.com/uploads/1/3/1/4/131453853/guvores.pdfIn PDF document text
    • http://files.nfchristiancenter.org/uploads/1/3/0/9/130969338/9387187.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007238.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007238.bin)
    • https://cdn.shopify.com/s/files/1/0438/2166/2365/files/fomutetedumujaborifage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2430/4286/files/mekudorupasapoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6292/3942/files/mining_ffxiv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/rifupuzivijibijopog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1de3d3c-676b-451b-8ca3-9c3a4052766b/46660392340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a759479b-9244-412e-801d-c2510a441de3/15533032825.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_off00007238.bin)

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7238 5400 bytes
SHA-256: 691a71e0427a1298a1256bcb9ca1219ccbe0afe00d78599e5f3cae33723be588
font_01_sfnt_off0000847f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847F 10248 bytes
SHA-256: a4f04e215fd0f22830ede1469b075e52e9ec57ba01c52d126bccb45e2e3f0cbd

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