Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5dd7bb761fd17d0…

MALICIOUS

PDF

38.1 KB Created: 2020-10-16 17:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 72f19dd57dea68a65b6bb519c5caf0e4 SHA-1: 40de1794a3c0caa8dede8e758f3acdc8d0e7e314 SHA-256: f5dd7bb761fd17d0457d1167ac6f72660b25eec1841d31f0f6b3d98e2319aa36
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://cctraff.ru/strik?keyword=h%25C4%25B1zl%25C4%25B1+ve+%25C3%25B6fkeli+5+t%25C3%25BCrk%25C3%25A7e+altyaz%25C4%25B1+izle In PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/resimogapukizudel.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/tebavu_mofevuz_punoxibera_gijipomole.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/5650151.pdfIn PDF document text
    • https://lifagixuwemup.weebly.com/uploads/1/3/0/9/130969738/zakaked_zalaxumujo.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/038885c85ecf8f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5f886a619f20a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f88cda4486ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_5f88fcd1e5f94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f88d8892cb70.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/a6ecbf06788df.pdfIn PDF document text
    • https://bajusumuke.weebly.com/uploads/1/3/2/7/132741128/bixew.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/966a9b.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7360136.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/xijiserera.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/f5d445.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/25d898778.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/9e4b7b08-fe08-4014-a2a7-ead7f35b9c2e/48851567359.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/842305bd-7217-4244-ae3c-82d7c16eb120/31856105089.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a47768be-2f54-49f2-8132-0fba4ff14110/22859860776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4922/1286/files/uc_browser_android_old_version_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0790/9794/files/linen_and_woolen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/farefedugitirapuxesada.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_off0000536e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x536E 5416 bytes
SHA-256: aa8bbba4a3c13cf74e29adee66510c33aae6595098bca56a3f0ab3e1224af178
font_01_sfnt_off00006591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6591 11276 bytes
SHA-256: 65495af9cd39154bc8f5c4a7a1096ab0519eaa6ebeaf14e18b8b0d75e728524d

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