Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e6bdd878d8031e…

MALICIOUS

PDF

47.2 KB Created: 2020-11-07 05:59:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 84f622446dcd9a76dfaa70858a3707e8 SHA-1: d856e07d8c81a598a016c11afbd23fb1d3e4abfd SHA-256: a7e6bdd878d8031e4ba114a9fd661ec9d2d7e20676ab0f9e86c0b435c1c21749
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafffi.ru/123?keyword=roster+format+sets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378843/normal_5fa19c9d9bffd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f88949f600be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375341/normal_5f9c312e6be16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f87308071e8d.pdfIn PDF document text
    • https://you.tube/In 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/8ff42df5-f28d-4110-94e0-2e7ba744c159/jukuviretikatunada.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/muririfo.pdfIn PDF document text
    • https://nijubar.files.wordpress.com/2020/11/75846096254.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/14962629632.pdfIn PDF document text
    • https://joxonep.files.wordpress.com/2020/11/96408350088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c2da09-d97d-47e4-ac8d-3d83b76713ea/bipaxoxumomikadomizut.pdfIn PDF document text
    • https://wisevojinu.files.wordpress.com/2020/11/lababazagijoxixexelufogal.pdfIn PDF document text
    • https://likuzow.files.wordpress.com/2020/11/40264502684.pdfIn PDF document text
    • https://xemeroxatud.files.wordpress.com/2020/11/36886831924.pdfIn PDF document text
    • https://jajazitegez.files.wordpress.com/2020/11/kituxatawapugux.pdfIn PDF document text
    • https://zogidadovo.files.wordpress.com/2020/11/gepixizorekabonagasi.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_off00005e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E99 4888 bytes
SHA-256: 6b35a5e8167cbd3100353657d42f343bc1084c38d0ebb6ad500e07a04adf225b
font_01_sfnt_off00006f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F21 12800 bytes
SHA-256: 50142075e5aeda35c13dff6f98d2606ee2128e643173f5dace4a8818778614c0
font_02_sfnt_off0000993a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x993A 16144 bytes
SHA-256: a0532d1212509dae036733b1fb6f303b0d7fd7a209d3928fdad713008da19d30

Open this report in the interactive analyzer, or submit your own file for analysis.