Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8853d8bd7b58f9…

MALICIOUS

PDF

46.1 KB Created: 2020-10-09 08:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4a059c852dfdd4171192cb3b79999d71 SHA-1: 053f201fed590ffb9763c84dbc6f269d4113dd07 SHA-256: 2c8853d8bd7b58f92f13f7d3eda22d5830df6f3c120245f0ea3863fb6e4788cf
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=les+territoires+fran%25C3%25A7ais+dans+le+monde In PDF document text
    • https://site-1043939.mozfiles.com/files/1043939/bukatokilabugab.pdfIn PDF document text
    • https://site-1042869.mozfiles.com/files/1042869/46998905361.pdfIn PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/25277805666.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/eff437ea-397c-4e50-8c6b-3800501f1067/ruwodevavekakez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b27dc84-539e-4b8a-baae-010237fea26b/18934536176.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f11de7-2238-4e68-9925-503bf454696f/97931161161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27abc49a-82bc-4fe8-8282-0a184ea04c71/kojowuxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1765/8780/files/igf-1_supplements_side_effects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/unblocked_motocross_nitro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2200/2587/files/simcity_cheats_snes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8535/2100/files/zikimanuxiwoxibofaputagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/5906/9095/files/34311787438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1760/0675/files/71105469813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/words_describing_the_moon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9272/0798/files/61414658729.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 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_off000071a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A0 5176 bytes
SHA-256: 06f4a180cebcc645f2996f3b7726edf1f5e142633c0304a0e7e0263338c43544
font_01_sfnt_off00008323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8323 12204 bytes
SHA-256: 5fdd992580e7dcf314f038acfb54c8c00eef91e463fd50a66368f4a2005959e1

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