Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e385fa0486474bb…

MALICIOUS

PDF

42.2 KB Created: 2020-10-11 14:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: a77ee0945eb9ab996cc1629652043b90 SHA-1: a9792bec4b9afaa64509bdb861a9f02b3210e7f4 SHA-256: 4e385fa0486474bbaaad27660f5995bfa17d3413a1a56813b90fe0b59fed1a9e
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=master+of+orion+guide In PDF document text
    • https://site-1039719.mozfiles.com/files/1039719/musixexexu.pdfIn PDF document text
    • https://site-1039314.mozfiles.com/files/1039314/81235003650.pdfIn PDF document text
    • https://site-1040615.mozfiles.com/files/1040615/98743974041.pdfIn PDF document text
    • https://site-1036909.mozfiles.com/files/1036909/varivujabilovogevujoga.pdfIn PDF document text
    • https://site-1036764.mozfiles.com/files/1036764/pizevisuzapiguwatudiw.pdfIn PDF document text
    • https://site-1038567.mozfiles.com/files/1038567/vodagefe.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/1/0480/8042/1018/files/dorothea_benton_frank_books_in_order.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1132/6119/files/11111639482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7947/0756/files/hunter_x_hunter_2011_ost_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/9975/7218/files/niwesizuzawevudopofusuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac371676-394d-4280-a474-f5c5e990dac6/83566428643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9f817b9-75a6-4411-8b63-1f45df494d78/89887375453.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_off00006809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6809 5048 bytes
SHA-256: 9fd04d62ab48c720b6d394a2a4cbe9ac844944632b5e923817966e228ca1eaae
font_01_sfnt_off00007948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7948 10192 bytes
SHA-256: 2621769196f23dd1b5059493681512c43f513e13715179da338588154df45f4d