Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dce8ab5cabec253…

MALICIOUS

PDF

68.2 KB Created: 2020-10-31 14:46:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: b8095f6de706f9d68e1f40f465489540 SHA-1: 924e9b6f9b1dbf4dd3bf90f25a651b608ee2feb6 SHA-256: 1dce8ab5cabec25316290746b6e7be111a9c349600a4c1a8eb0773ce6192b2b0
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/wb?keyword=cours%20complet%20sur%20la%20gestion%20de%20projet%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376379/normal_5f8af597f00e2.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/8854925.pdfIn PDF document text
    • https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/26725a8e.pdfIn PDF document text
    • https://diveziriluro.weebly.com/uploads/1/3/4/4/134447321/bulexejunudabajami.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/vitik-gebewanav-veteranurov-tupofezawibija.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387825/normal_5f94dd7b7f06b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387232/normal_5f9c55bcd63f3.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/sibuvodoz-zazekojozawisi-nodowana-joxabe.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/79acc117-4b90-4484-b996-713fea978dd4/sofuduxikulorafemozopan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c73397e1-6636-4cb0-8e64-612d8f1e117f/dr_driving_hileli_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25363a61-8dc9-40ad-83e2-c967781c7ffc/86590636039.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_off0000c762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC762 5456 bytes
SHA-256: 7c974d1c1f691adf5e9d7d7e06608d4b51441fb68ae70c5a7405a09b6467c7a7
font_01_sfnt_off0000d9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9DF 12892 bytes
SHA-256: 8122e842952c25c9b00bd964c715a1600b01775f255d0a5b5764e22188279c79