Malicious PDF — malware analysis report

Static analysis result for SHA-256 793df72cabf1ca02…

MALICIOUS

PDF

43.3 KB Created: 2020-11-01 18:58:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 804f17c0dcff7120838bc5df7b991358 SHA-1: 34cee18c448992eccd70d79afe04b2d314167f90 SHA-256: 793df72cabf1ca02a55d18617121077831c3192d8c4e4e4cf4d11c07810aa44d
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/wb?keyword=esoms%20becc%20nko%20answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f87a232aa7f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5f9de1dd57621.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/1/0503/3558/0357/files/nintendont_wii_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/48939397694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5637/1109/files/69358898301.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/nudiwerosofewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1154/4987/files/vaminazazutuxuwaduji.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/rewumisixetajanenigapop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4812/4575/files/learners_driving_test_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9854/5562/files/what_does_tr_mean_for_classes.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/tower_social_link_persona_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6524/3311/files/dolphin_show_games_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/vawozejejolegisotet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/7063/3140/files/amc_theaters_employee_handbook.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_off00006b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B38 5168 bytes
SHA-256: 4475d4a28403ee120c74170b81f8744b8630e65a83dda803bf87f48cc51a01b9
font_01_sfnt_off00007ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCB 10444 bytes
SHA-256: a344a4c78d9f45b5d61d047f0fbdbf3c7d7e126c84d804dd65ed1da4168f7f14