Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd365b26ac00b1cc…

MALICIOUS

PDF

42.9 KB Created: 2020-10-05 21:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: db0ca3d9bb0be4eae1583a58f4212492 SHA-1: e51de0293024fe96e1693603f7238151f1032951 SHA-256: fd365b26ac00b1ccc7c5cffa38212aff75ad268234c15c1441a7f89475f8a49e
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://gettraff.ru/strik?keyword=the+addiction+treatment+planner+free+pdf In PDF document text
    • http://files.josephmbrown.com/uploads/1/3/1/3/131398547/josebidigewu_zowomini.pdfIn PDF document text
    • http://sodos.mightygreen.com/uploads/1/3/0/7/130775726/lolimixot_rabuxezo_suvarozexugag_toliwol.pdfIn PDF document text
    • http://files.gelaboutique.com/uploads/1/3/1/4/131437669/jitepavesujojajunopu.pdfIn PDF document text
    • http://piben.takuretailstore.com/uploads/1/3/1/6/131606552/2967b8cd20449d.pdfIn PDF document text
    • http://files.saborlatinotacuari.com/uploads/1/3/0/7/130738553/kojujesanatinug-tasabako.pdfIn PDF document text
    • https://site-1040280.mozfiles.com/files/1040280/zakevizufikukoja.pdfIn PDF document text
    • https://site-1038365.mozfiles.com/files/1038365/44213132493.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/a310aab0-f485-4197-ae99-3a27562c24ea/jixesoworalasiponi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24147376-43e0-4fe3-a4f1-e71a7b944f66/43626259154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c6619e-2e60-4c32-9e1a-e5286653bc94/64380843606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbf006ea-5900-4068-9000-b5329b4d7f3a/xewarud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/is_potassium_nitrate_ionic_or_covalent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6200/1301/files/tasazumomokusinilenegafex.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_off00006a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A07 5164 bytes
SHA-256: 4f44ff457550ec958d457473462a1ad6410164c0caf29f47de29181e254f75e1
font_01_sfnt_off00007b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6F 10364 bytes
SHA-256: 8914bfd6a8da041d9ca5e416b3ae470172c2d8f891ca1d07d5602d7a684e8a5d

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