Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a25d02e103a16d5…

MALICIOUS

PDF

38.1 KB Created: 2020-10-18 17:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ed685d6a634b604bd3d8b6dbed14a15e SHA-1: e6d3ed0c23957c65a6b789b5848549e5e6b9a516 SHA-256: 7a25d02e103a16d5f923f148c93ef7f4abba947d1dca751c2bb709a703c5c6d8
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=la+canzone+dell%2527+amore+perduto+spartito+pdf In PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/sosepazikodo-tolakilapagapoz-xuzukunixi.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/zumifoxenifu-ganamodegunebo-tusekib.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/ce5f6abd4dae9.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/9031774.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/gefup_kimubapodevig_wuxexim_dufati.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/855122c4-5458-4654-a54e-dd3dded5e8f7/rezugepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c0fd7fc-ca2f-4422-aa78-e8cc1c7fac64/83180398661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6891324-5afe-481e-9d61-cbbbd1af0744/mizor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dc8e400-4322-45de-8556-d440f65450eb/lajilewusukulibuvogajog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/target_gym_bag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7485/1494/files/gomibojuladagolebugis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd9eaad7-d873-40d2-ad07-85790493afca/dawikadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a249a21-d27b-46fe-82f2-0a67f63fd182/96656605117.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_off00005589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5589 5324 bytes
SHA-256: 363a57552d6408c35019b253d1c6e8adb70da9994ed9596f4aeb2e14e8cf40f4
font_01_sfnt_off00006798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6798 10988 bytes
SHA-256: 555ad4f2dadf5181623a59e5caeec12aec3c936c35a3e2ea0ad13eb91f60bd97

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