Malicious PDF — malware analysis report

Static analysis result for SHA-256 de42c0a1a81fb9f1…

MALICIOUS

PDF

67.5 KB Created: 2020-10-24 20:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 41c96d976d07c9f1e780778643ac65a7 SHA-1: d807def336dfa30e211acd07095c46fc5f81b10b SHA-256: de42c0a1a81fb9f154fd341b03f4f9f3eb15e5e37d1e799a0e5124d9ac4d1a64
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=puente%20disulfuro%20pdf In PDF document text
    • https://s3.amazonaws.com/fasanag/73311178067.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/35914075649.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/gayle_laakmann_mcdowell_cracking_the_pm_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/15119078055.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/sadesiluxexap_mekonaminarufof_dixeriwe.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/womanawiwurek_dipewububexuti_tudanado.pdfIn PDF document text
    • https://tadeganerusoza.weebly.com/uploads/1/3/1/4/131438541/6566736.pdfIn PDF document text
    • https://lejigatoni.weebly.com/uploads/1/3/1/8/131871980/ruwubexopadoku.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/pogedemuboxosoz-gakivetatox.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/9710696.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/28397caff1f.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/fizatutepilux.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/rotofugi.pdfIn PDF document text
    • https://wivepeweg.weebly.com/uploads/1/3/1/4/131455463/2205012.pdfIn PDF document text
    • https://nakumupapetiz.weebly.com/uploads/1/3/2/7/132741615/laxepozexodu_zuxikulul_rajijal.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c44b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c44b.bin)
    • https://uploads.strikinglycdn.com/files/076ae2b2-4727-4044-b0da-26c3a3d5fb22/26886525789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaf4b9ad-9c50-459c-a558-9e28a2afe0e0/genesozaronikedekuzaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a901db43-6e4c-4ba0-a408-47bda1d96b9a/wopilofubuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b312e5e3-e6bd-4248-8183-a9e53514455a/sivugorefazowixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5953d889-aed0-45ba-879f-0c55103e6b5e/36235484937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a56da85-585a-41c3-871d-8e97f7407ec8/xewesozumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1256517-47f0-4eee-827d-09efe5c2e526/love_island_season_2_game_answers.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 extracted file (font_00_sfnt_off0000c44b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC44B 4828 bytes
SHA-256: 0307cafeb0544a501846cbe9ebc98375eadb5ffe53287f7fb40cab4e6d0a32e1
font_01_sfnt_off0000d4c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C7 13368 bytes
SHA-256: 9e0ce3e0d5caa5ff5e2bffa88f2b25f20652280e9c1072376130f409731be898