Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e8c7dab80808af…

MALICIOUS

PDF

46.0 KB Created: 2020-09-30 14:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 630018e95473c1b66f4fd71b61d3209c SHA-1: 5e813230ad39c2137cd8f366495fcae4d69d8e18 SHA-256: 05e8c7dab80808af95bad4d5074925e9f884f099ee4e9c711508840a5f53b6ef
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=ignou+b.+ed+entrance+exam+syllabus+pdf In PDF document text
    • https://site-1037071.mozfiles.com/files/1037071/83430406998.pdfIn PDF document text
    • https://site-1036883.mozfiles.com/files/1036883/4062944165.pdfIn PDF document text
    • https://site-1036872.mozfiles.com/files/1036872/96412297754.pdfIn PDF document text
    • http://vujij.kolectivsg.com/uploads/1/3/1/1/131163635/jemivon_venazemex_xixoxosiz.pdfIn PDF document text
    • http://pivotuma.keepsaladobeautiful.com/uploads/1/3/1/3/131379230/2696012.pdfIn PDF document text
    • http://files.alphaesqcleveland.com/uploads/1/3/1/4/131437535/43b4a4fc5dd235c.pdfIn PDF document text
    • http://nujefafif.worldwidewatchministries.org/uploads/1/3/1/4/131483281/wajebonegarogup.pdfIn PDF document text
    • http://files.lenayingli.com/uploads/1/3/0/7/130739699/jedasaseko-junonanemad-nimelil-bakoxuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3ccc7cf7-a088-45f6-a436-0c195a1ada98/vobobag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58b65de3-46f9-49fe-9e6a-e85205cbf6d6/rebatufovekid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/102ffe62-27aa-45c1-873a-4194d95a8f17/69668195729.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8089aaad-4905-437d-90bb-271e8d9ee489/sifukaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8418/files/french_bulldog_breeders_in_north_carolina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/verrouiller_une_ligne_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/tavodigewefomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/nepow.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 5588 bytes
SHA-256: 15ab11cb83cd0228977b4d2a58326df0f689b76d4807c337ab393a470b3e4977
font_01_sfnt_off000079a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 10312 bytes
SHA-256: 0c3674f56541b3ee4b846e6fe50a5a87e46616ad4a37e13a628c7e1ae7b67bfb
font_02_sfnt_off00009ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CED 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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