Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c8d1ac30e54cc3…

MALICIOUS

PDF

48.2 KB Created: 2020-10-17 02:12:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: e11fa3946966fe912e77ae0d562a6acd SHA-1: e55df6db1221bd4c37dcde5c3bfab4f9e2ef8395 SHA-256: 59c8d1ac30e54cc333eea1871f324a3ab8e76f2e95f53950b566bc7e20ab5810
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://ggtraff.ru/123?keyword=formation+en+fran%25C3%25A7ais+pdf In PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/262784d6600da4a.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/ledasu.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zebapesuluboxaj.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/vigage_nojapusolarezux.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/5776259.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/lixavej_rivutavipulox_vunezikavad_lirumonoguwako.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/40ddfa4d7f4e3e.pdfIn PDF document text
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/busukulibigovus-watizobegar.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jasamejug-jenutuzudemeluf.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/7965169.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/zemokivajuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369158/normal_5f8a212d443ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369316/normal_5f8a116ab3f70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_5f890d02797ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_5f87358fd46df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f89bfe354033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5f8a153883614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373992/normal_5f8a163554c66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f874acc16014.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369919/normal_5f8a21e902fad.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/sefaritonos-nukivafeka-retisebop-regaxumex.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/8008187.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00007a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7B 5292 bytes
SHA-256: 387cc2c81ae21c7f3a632625f7dab1ee3279e39c666339ecbb865032017102ec
font_01_sfnt_off00008c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C63 12056 bytes
SHA-256: 959e4c9cf82842a59546cba7ff7ec350bbf0145529200f65a11723419420e760