Malicious PDF — malware analysis report

Static analysis result for SHA-256 c210d61b5f3ad347…

MALICIOUS

PDF

41.4 KB Created: 2020-11-05 21:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0175ae0b7db423398e2dd19ed59bba53 SHA-1: 834a452fc03e321f7edd1bede9e26f7d8eab0f3a SHA-256: c210d61b5f3ad347d4fedd5eb61d912f658751fa538a404a201f9d1f429432b7
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, indicative of a link farm or SEO spam campaign. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to potentially malicious or spam-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=mx+male+enhancement
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/3509862.pdf
    • https://cdn-cms.f-static.net/uploads/4423195/normal_5fa2393e60bfd.pdf
    • https://jonipafatanepa.weebly.com/uploads/1/3/2/7/132741476/134d576031.pdf
    • https://cdn-cms.f-static.net/uploads/4455399/normal_5fa3ca8b83ba1.pdf
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/4fd34e426f0e5e.pdf
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/9064803.pdf
    • https://lirabofopexile.weebly.com/uploads/1/3/4/3/134356775/jenalar.pdf
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5f89bf4c2ae4a.pdf
    • https://cdn-cms.f-static.net/uploads/4388819/normal_5f9cdec95b503.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/wong_kim_ark_viewing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0268/8676/6764/files/nuance_power_advanced_download.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dc7.bin
337be8689542b40fd0a14251c969946bca0d02f62777981c3723973b54529ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC7 4840 bytes

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