Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c89ec2dfe2779ba…

MALICIOUS

PDF

38.2 KB Created: 2020-10-08 09:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2a86b29fd8b782c96f4b764a5c276e52 SHA-1: 34c9b14f6cb2ff6f684d6f304c4f83da6675cdd0 SHA-256: 2c89ec2dfe2779ba57954f261cc4aba058323d825b282d9ac64bc3f4d43dad81
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=avision+ad240+pdf In PDF document text
    • http://files.craigheadcountyveterans.org/uploads/1/3/1/4/131406715/lilafifazalut.pdfIn PDF document text
    • http://lijurizu.spiritbearservices.com/uploads/1/3/1/8/131872055/sifubulabedama_ponovatib_junikefezoj_solutoletamaj.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/c84f68b6-69ab-44bb-a150-2654c928a3b5/53373940433.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e5c4383-b52a-45d6-a9be-4ae36c50c09f/manam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bcbf784-c23e-41f3-80c2-db8c47311700/dilumebowifeguzabedinubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4757ec8a-5df7-46d9-a00d-a1ccd737e95d/xuruxarutexalapadewisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5881/0017/files/buxibubisakokuvenad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab55dfa5-4d7e-40ad-85a6-44e2a256823f/42825319868.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5762ea8e-33e0-4af7-92da-2fcd09d443f0/tagifoxozuloxita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d6b2263-2f02-4f4a-af32-bc3485d846a5/repefodamirir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8be5a43-d21c-44e7-8d5a-2f1247251784/57652806281.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49FC 5316 bytes
SHA-256: 390194a7d2fec48993ef7704c8cac7a6d584d7c7b4724720e63bba5bb7e2acd5
font_01_sfnt_off00005c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3A 15320 bytes
SHA-256: c835d4c2508c97f5189787d0fb8a1df54868aec7db8b5eb3bb192ca7cbf8b63c