Malicious PDF — malware analysis report

Static analysis result for SHA-256 0408b66d74ca4de0…

MALICIOUS

PDF

33.6 KB Created: 2020-11-06 20:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe7ecc833e52b8b6923c2a1194efa138 SHA-1: e398ccf7cfa365c3de8003f43cc51d3c52803e48 SHA-256: 0408b66d74ca4de08f8e496da7f4ce8c2072d421bd1247c10093d4bc21dcb944
94 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, presented under the guise of a 'Tj maxx return policy for online orders', which is a common lure for phishing or redirecting users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or redirection scheme. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://traffnew.ru/aws?keyword=tj+maxx+return+policy+for+online+orders
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f875a093b4b8.pdf
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/3724790.pdf
    • https://zedawaven.weebly.com/uploads/1/3/4/6/134634651/10ac81ddd99b.pdf
    • https://bevowodawalejap.weebly.com/uploads/1/3/4/3/134363876/fuwimaxakitu.pdf
    • https://rawekawus.weebly.com/uploads/1/3/4/4/134467784/gufunov.pdf
    • https://cdn-cms.f-static.net/uploads/4401519/normal_5f9b857b84a3e.pdf
    • https://wusinetowaje.weebly.com/uploads/1/3/4/4/134471696/nilipivonabubufe.pdf
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/buxijunikerok-ravepobelosewu-tufukuxesotiw-wejidaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://wezodik.files.wordpress.com/2020/11/59584403987.pdf
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.pdf
    • https://borivul.files.wordpress.com/2020/11/39154178052.pdf
    • https://zatejoru847961968.files.wordpress.com/2020/11/72489844693.pdf
    • https://rarokazuj.files.wordpress.com/2020/11/dixuvazeradunosunise.pdf
    • https://juvibix.files.wordpress.com/2020/11/gabizagamumarokidatanum.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065be.bin
60ef6744585842d49626101df60cb166b26c7c4941cba8888d0c1fafbf930596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65BE 5496 bytes

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