Malicious PDF — malware analysis report

Static analysis result for SHA-256 205c1f4ebd81bd2d…

MALICIOUS

PDF

70.9 KB Created: 2020-11-01 11:43:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-19
MD5: adadbbce469714cc1cd50ea4093b2c86 SHA-1: 3e544631c95c345d4ac26ac56a6001b45bf8c964 SHA-256: 205c1f4ebd81bd2da386a84066b9bfe30857a3f4fcedbb1b787404ced1b19a9f
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://ttraff.me/123?keyword=maps+of+river+systems+usa In PDF document text
    • https://s3.amazonaws.com/welanisowari/accel_world_light_novel.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/arithmetic_reasoning_shortcuts_in_telugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403680/normal_5f97b72f2cc03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372955/normal_5f8a7c278eb6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5f8d5628d1db5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427529/normal_5f9d36f33cbde.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000d553.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000d553.bin)
    • https://uploads.strikinglycdn.com/files/c3088c91-136b-40ff-95df-1eba90452eec/suganevanatugese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc39bc7-8084-420c-9ea6-86d8c55f9d56/fuligepisuxipafoluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8770/7290/files/forensic_science_classes_needed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8039/2103/files/46015669497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0350113b-a6ca-4110-88fd-47dedef7b1b4/furniture_row_payment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5006/5831/files/fedodetikijuvuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/kaxilezuk.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_off0000d553.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD553 5184 bytes
SHA-256: fa61a5cbc0501bb25089b1de74ecfb8727d7d2d2a08672c638491b545c1f3a65
font_01_sfnt_off0000e6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F9 12276 bytes
SHA-256: bca0d2c995f2f25dd8c0575fea6045b04c47d8f59a2e66af17899383fda23e27