Malicious PDF — malware analysis report

Static analysis result for SHA-256 af258b468711b4bf…

MALICIOUS

PDF

60.7 KB Created: 2020-10-11 20:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: ba4d005304e2fbc438ab05ee18ed7ac5 SHA-1: 2f7e066dfd7ba931edce2e1bdc0be9a4d3302f45 SHA-256: af258b468711b4bf4f120e72ec530f6b5e2eafb80c73cceb1b6f929c5415a004
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=isaiah+53+explained+pdf In PDF document text
    • https://site-1043536.mozfiles.com/files/1043536/judarerotamodi.pdfIn PDF document text
    • https://site-1036779.mozfiles.com/files/1036779/karunefim.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/29350964639.pdfIn PDF document text
    • https://site-1037085.mozfiles.com/files/1037085/77934691557.pdfIn PDF document text
    • https://site-1038844.mozfiles.com/files/1038844/sinuzudabep.pdfIn 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/1/0432/2754/5755/files/crooked_man_game_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/tizugelogim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8161/9870/files/conceptual_physics_12th_edition_practice_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/10265249925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6640/6552/files/18681617882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5603/5990/files/the_tyrant_falls_in_love_episode_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0121/9752/files/jejefini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7648/7841/files/jegotoz.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_off0000ad45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD45 5328 bytes
SHA-256: a54b87da75319d9e479afa7ff3143769057d734c4010948f001981b7d12f3cdc
font_01_sfnt_off0000bf5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF5F 10852 bytes
SHA-256: 4892645a29f3666239d46238b16750931a1dcfc85f2d54aad4e23e95a5cd148f