Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d33b88eb313c877…

MALICIOUS

PDF

46.9 KB Created: 2020-10-17 02:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-14
MD5: 1f39be3de679e63cef165fdedfdc8638 SHA-1: dc6a57e5827be45e7ea69553d47f250677ac404a SHA-256: 0d33b88eb313c8770809d2eb96e1cab8307f82e89179f6b5e87f5c95ecf0eefa
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=sketching+user+experiences+the+workb In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f87133a82d62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366655/normal_5f89bebe981e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_5f89216c2074e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f87a4ef2e831.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f8a03a6a6439.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/cb409170.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/92592.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/4131719.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/muvuvujulatibor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f8740b6bfc4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f87272b3255c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f8a1f882e9c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f89889175de0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f870dfb3410f.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/1/0502/5556/0872/files/yokogawa_sc82_conductivity_meter_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2409/6669/files/mosquito_magnet_patriot_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7658/2560/files/divinity_original_sin_enhanced_edition_complete_crafting_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4612/0866/files/wukurope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9150/1990/files/growtopia_gem_hacker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5074/4478/files/imdb_parents_guide_designated_survivor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5979/6904/files/fadogam.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_off00007714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7714 5420 bytes
SHA-256: 57985d7838e80138619227303a45186d57ff286ddb2beb8c052982c01a78569e
font_01_sfnt_off00008995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8995 10696 bytes
SHA-256: 7270dd77f8a3a2018f6f4afc0aa953b06a7bb60d445723ed2d23ccb4b5c6dfef