Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af4129cd88f9d24…

MALICIOUS

PDF

48.8 KB Created: 2020-10-07 08:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 88727803bdc9b476630d7d29576f14ba SHA-1: 47717cda9ceb8461f3ecced60601c402bac83aac SHA-256: 4af4129cd88f9d2417fdae919b0a51ae76628f7f3f88f089c9c084bd7e1a8c07
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://ggtraff.ru/strik?keyword=canciones+cristianas+acordes+guitarra+pdf In PDF document text
    • http://files.laurencedeadionneart.com/uploads/1/3/1/4/131483128/davuzepuginun.pdfIn PDF document text
    • http://files.lcaclassicalhistory.com/uploads/1/3/0/8/130874213/genedimeto.pdfIn PDF document text
    • http://dupidivi.mrreckling.com/uploads/1/3/1/4/131452836/bodukus-mafoxeraka-fukisewu.pdfIn PDF document text
    • https://site-1038635.mozfiles.com/files/1038635/domudugopurodu.pdfIn PDF document text
    • https://site-1042551.mozfiles.com/files/1042551/xaxixaxilabokokiwexulinil.pdfIn PDF document text
    • https://site-1036724.mozfiles.com/files/1036724/91155718586.pdfIn PDF document text
    • https://site-1040037.mozfiles.com/files/1040037/nuvuwanukifuxewaxuxizegit.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/1/0470/5851/8184/files/mathematics_vision_project_module_5_answer_key_5.3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6537/1541/files/how_many_ounces_in_a_shot_of_tequila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1977/8720/files/kubezudelinasokoban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/pekuxefojonolurubiniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0839/1330/files/19082108588.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_off00007e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E57 5196 bytes
SHA-256: 393667e4e28b3b7fb871dda4bd36fad228a08a94a792714f9727531f496465be
font_01_sfnt_off0000900b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900B 11264 bytes
SHA-256: 059caf076d223464ceae09496282b22cb55c81aeea5038e4638290144ebf0c51