Malicious PDF — malware analysis report

Static analysis result for SHA-256 698921eeec5cd6ce…

MALICIOUS

PDF

47.8 KB Created: 2020-11-07 07:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: a47f665d4e371a151563990bd7d049d2 SHA-1: ad20f8a7d4675caf3f5ef70a8e1423d57e8bd0b6 SHA-256: 698921eeec5cd6cecbf3c8495a2fae82b87239998ed6fd5d2523a8f30c220e50
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/123?keyword=letters+from+santa+sample PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425921/normal_5fa225e3785df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450507/normal_5fa5dd006e41b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5f9be11fb1eab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_5f978ead44293.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pokagiriti.files.wordpress.com/2020/11/retitoxamarivo.pdfIn PDF document text
    • https://xoxitefig.files.wordpress.com/2020/11/zakefugibisijatuwusovuvi.pdfIn PDF document text
    • https://rotadenig.files.wordpress.com/2020/11/82236523173.pdfIn PDF document text
    • https://teviwuder.files.wordpress.com/2020/11/rivefom.pdfIn PDF document text
    • https://mepibezanaxe.files.wordpress.com/2020/11/educao_no__privilgio_ansio_teixeira_livro.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/bossypants_espaol.pdfIn PDF document text
    • https://jikuboji.files.wordpress.com/2020/11/3746841527.pdfIn PDF document text
    • https://zetetojowu.files.wordpress.com/2020/11/automation_game_mods.pdfIn PDF document text
    • https://pevejimo.files.wordpress.com/2020/11/tenopegavujanup.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6686 4988 bytes
SHA-256: 4a260a09afc314d000d4fe716e93865fa78f4eca3c2ba6645c194f99b638d3bf
font_01_sfnt_off00007768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7768 11224 bytes
SHA-256: db67fe739d60c4955c21b72e363f3f274120425737fdc57387d2bed1df28a51d
font_02_sfnt_off00009c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C69 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939