Malicious PDF — malware analysis report

Static analysis result for SHA-256 db15fb462f198184…

MALICIOUS

PDF

42.0 KB Created: 2020-10-15 03:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 793bafaf40e8e20cda7280434f97514c SHA-1: f1746136c4157af8bd0ea54f560341a61bebec50 SHA-256: db15fb462f19818441c517bbccfe2e8e47e68cf4ffcf0640de001843295ca69e
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=setting+pubg+terbaik+android In PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/1637570.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/77b0c468a.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7885719.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/1964642.pdfIn PDF document text
    • https://site-1038679.mozfiles.com/files/1038679/21620386163.pdfIn PDF document text
    • https://site-1044106.mozfiles.com/files/1044106/tilate.pdfIn PDF document text
    • https://site-1039785.mozfiles.com/files/1039785/linefuzuzobuses.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/2a774b77-8d68-4edc-80a8-720919f0f3c3/30700536489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c47a00d1-1b70-4aa7-9d96-a1f012adc317/sodojebamewezuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc4340c4-6968-4ead-92e9-58b038611b29/12363057961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/483762eb-953e-45f1-8ffc-aaa9c0d60805/buxovawaxemujejurepevozuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7314/1912/files/4591962024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7628/1031/files/adguard_apk_android_4.4.2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/bubivigugaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4981/0070/files/mixisokabavopodutajap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aab4059-48e7-47ea-a4fb-a4f5870ff306/sefalubozujiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e6ff17-5b39-49d8-bb14-8d534d2bf8a4/vefajerovijunefujomukep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44e37f20-466a-4251-ad7e-395d82ae1722/foxomiwowuloku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b2a72a-d01c-4d6f-8dee-c4b70ad0633b/posifibowisotesonur.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_off00006650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6650 5224 bytes
SHA-256: 9deef5949db979f8bc575c7faf247cf0fc081a74a5fd7d6f0c86f2098cbe58a9
font_01_sfnt_off00007817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7817 10248 bytes
SHA-256: 7a24a4e3a611dfbaadf8e21a8a5d56a399dde19959c37013562fb082e4302416

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