Malicious PDF — malware analysis report

Static analysis result for SHA-256 6243cf870fbd1963…

MALICIOUS

PDF

79.2 KB Created: 2020-10-01 03:25:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-29
MD5: c86df6046542edd16da92976f79cd218 SHA-1: 54b2b978b1e53cda5f044eccca9e451be7129ea0 SHA-256: 6243cf870fbd1963e08106f4e25102ab7875db5a1d57129771f26e64fa8b5e65
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://gettraff.ru/strik?keyword=panchtantra+ki+kahaniya+in+hindi+with+pictures+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8785/3720/files/hello_bengali_movie_300mb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/english_grammar_book_free_download_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/34375588995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a75202d3-9734-4c3a-b65f-703cb1f3f823/xetunubavodoniw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/322d8037-ef50-4c8d-9ad6-092fa5a98b2e/36692039413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/943eb1e0-e653-4fc3-8296-6862aef895b7/98337282982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/442bd1d7-247e-4bfb-b354-2296537cce09/maxexokalijijozog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba2c259b-b84e-44f6-b043-5dcdd3b45dfc/23517629629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/102ffe62-27aa-45c1-873a-4194d95a8f17/69668195729.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9479c041-d364-4802-b011-3629805e1092/25303963657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2f248a1-1549-4e4c-a37a-ad493db9d047/nalubuxavokezuzoxuwejopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef930d39-201f-4cbe-85bc-ef419cf29383/28175056775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b63d6983-ed8a-4be7-9d7a-5c2696c83094/84125085546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52db3b47-a78c-47fb-b54d-e24920ed92a1/kuwukunodisisuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72959afc-8229-4fc1-81b7-b75a9a84b84c/83277207158.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

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_off0000ee97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE97 5468 bytes
SHA-256: e12a042bc2dbbd8bd533ec48c60641a28adfb81830d4a1940fc459cbbcce06a1
font_01_sfnt_off00010141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10141 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off00010ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA4 10024 bytes
SHA-256: a4d37530507106b3c9e77693740442c044f7d4fbd8bce9669a8b8633480485ab

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