Malicious PDF — malware analysis report

Static analysis result for SHA-256 793b4fae7f015297…

MALICIOUS

PDF

40.7 KB Created: 2020-10-05 20:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: ef753fa33b64cbee86312e5f5799ccf3 SHA-1: 531bd81cdeababb679f9f6e72ca019d4de37d97d SHA-256: 793b4fae7f01529710a961235a06a05642d384f6dabc006c122d5afbcfc66fc4
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=xcom+enemy+within+cheats+android In PDF document text
    • http://files.homeandschoolsts.org/uploads/1/3/0/8/130813108/jisuvetexul.pdfIn PDF document text
    • http://nedalubo.miwabookery.org/uploads/1/3/1/4/131452923/bf81fe6a3161d.pdfIn PDF document text
    • http://files.thepressboxsports.com/uploads/1/3/1/3/131379384/filetega.pdfIn PDF document text
    • http://vukiralaz.amussispainting.com/uploads/1/3/1/3/131379803/dugoxipera.pdfIn PDF document text
    • http://tujifi.leeplazashopping.com/uploads/1/3/1/0/131070469/3733020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5b3ea1d-588e-4f51-a0a5-e803b69b5a89/84539853175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/182af18d-f88c-4497-ad00-e612bf5f49e6/69239666348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d43f3a88-844f-48cd-8f7d-f20265449b4b/18991176793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8007c028-92a6-428d-8a4f-a24ff90a04ad/rukevafopimukozagafomudul.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_off00005fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB9 5316 bytes
SHA-256: 395fd6cf77ee4111002151c1f1e9866c09f807fb370bd9440fb1d373833e1314
font_01_sfnt_off000071b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B7 10788 bytes
SHA-256: 7369db26e25c5cfc672037b30a8f74484de234bb2df4e218f222b42ee1e36e53