Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e35c22610ce13cf…

MALICIOUS

PDF

57.2 KB Created: 2020-10-07 11:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 72730e3a127112a9df55c0e65b313c58 SHA-1: d6a01925fcf98a87961eabcdb5057b34fe25304e SHA-256: 4e35c22610ce13cfc518faa73866575117c697b05f6699adfb50e7e44a5aa25d
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=accord+de+l%2527adjectif+qualificatif+cm1+exercices In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c6cf03ea-1cad-4b6c-ab27-ff35cc22de34/mofimerijikipitexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74978b98-7a56-4484-94f2-32d587bc7dfd/49655656042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd18ddf1-d884-4168-94d7-ebea727482e9/31193746260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/039ab777-1549-4673-9309-ba8235c52505/91738427792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2516/9565/files/the_grand_alliance_ww2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4453/1107/files/sibivejusogewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/tolopeluti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c28aa579-70ea-4df8-aa35-8678441de763/79851949456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b39d0ca2-e110-4ed6-8927-76125c995b33/galarovepedij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98791f77-3d8b-4de4-b21f-dc07ea6d35b9/8385627244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/468a01b0-d986-4f8b-b820-6b0529b7b46e/kulakitidabowaweme.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F1 5288 bytes
SHA-256: 63f71db29c8d29262bf6da8bf22aaa258302d6ecf9a6c5fe78af233f84108c7e
font_01_sfnt_off00008c01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C01 12128 bytes
SHA-256: d2dbf004eb0d74442ca76562f8194d26ff038d204a18303f6c4f1523feef2f07
font_02_sfnt_off0000b22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB22A 16144 bytes
SHA-256: cab0398e3f282db8df8ee7224df0619fbc6b67f81493afdba6d4f29ecc3f2809
font_03_sfnt_off0000c732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC732 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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