Malicious PDF — malware analysis report

Static analysis result for SHA-256 4873602f7e6cf15f…

MALICIOUS

PDF

34.5 KB Created: 2020-10-04 00:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-21
MD5: 7db05d921bc4378237e8a1565ea9f735 SHA-1: c7452c804ba69793c9c5cbb4254a17b6cac5ae35 SHA-256: 4873602f7e6cf15fb41fa555ea8820e3f60bb7938c67d9c825015e1f16f1c87d
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=control+of+electrical+drives+leonhard+pdf In PDF document text
    • http://files.max-mindpower.com/uploads/1/3/1/4/131453464/2ae8d10ab6a1c.pdfIn PDF document text
    • http://files.galgoamigo.com/uploads/1/3/2/8/132816202/wejora-wurebomibevirip.pdfIn PDF document text
    • http://files.seek-and-find.net/uploads/1/3/0/7/130739175/tovidobiliketogomume.pdfIn PDF document text
    • https://site-1041860.mozfiles.com/files/1041860/siteta.pdfIn PDF document text
    • https://site-1038796.mozfiles.com/files/1038796/ripunirokuralifozenak.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000041bd.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000041bd.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00006f06.bin)
    • https://uploads.strikinglycdn.com/files/f6ed4f10-5e3f-4769-b06d-a8bdbb5f43be/zedufofewasejixovub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8690dcdf-ff25-4b91-a027-b5059638efb9/84401717298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bf45866-3534-4f05-a10a-b20f2bca49ad/gofidir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b1e1607-e07c-472b-940f-974f54731d7a/12116208367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97ba7e6e-dd35-4afa-a62c-8ba952bf2e35/xebexugodetawivutefitofik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4524383-e2e3-46ee-b286-6f69a031480d/figugujegaroz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ff529f-68fc-4cdc-b164-952642a4f43c/46664029981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee71e563-4d15-43fa-9473-aac8323c7b2e/61355320482.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_off000041bd.bin)

Related samples 4

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_off000041bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41BD 5116 bytes
SHA-256: 9396462271158d8186b8e6c5b170d3296d892d4cef4c0cfca225129c0c8c9337
font_01_sfnt_off00005320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5320 8204 bytes
SHA-256: 131908d886c89d04e2aef9762a65bfe48d82b848c2e88e3bca7cee52509937a0
font_02_sfnt_off00006f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F06 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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