MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'https://cctraff.ru/pify?keyword=clay+county+mo+property+tax+waiver'. The document body, though heavily obfuscated, contains this same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm strategy, likely to obscure the malicious destination or improve SEO for phishing. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://cctraff.ru/pify?keyword=clay+county+mo+property+tax+waiver
- https://cdn-cms.f-static.net/uploads/4368989/normal_5f8d5175be104.pdf
- https://cdn-cms.f-static.net/uploads/4366375/normal_5f878c3888fe7.pdf
- https://cdn-cms.f-static.net/uploads/4421200/normal_5f97183389c4a.pdf
- https://cdn-cms.f-static.net/uploads/4403816/normal_5f9c4a5811dd5.pdf
- https://cdn-cms.f-static.net/uploads/4373770/normal_5f88f26bdaf75.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0504/4060/1754/files/8th_grade_common_core_math_textbook.pdf
- https://cdn.shopify.com/s/files/1/0439/3811/9838/files/menosodamu.pdf
- https://cdn.shopify.com/s/files/1/0430/2661/2378/files/14975050575.pdf
- https://cdn.shopify.com/s/files/1/0501/6934/8248/files/livingston_county_humane_society_chillicothe_mo.pdf
- https://s3.amazonaws.com/lixuduwonifa/41974530502.pdf
- https://cdn.shopify.com/s/files/1/0497/7514/9234/files/compiler_design_lab_manual_rejinpaul.pdf
- https://cdn.shopify.com/s/files/1/0477/9045/6991/files/even_piell_lightsaber.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000079e8.bine2352655e080d89a73208b8f9cdfe81c2f0c6007c46e4e4416ef11274d8ae425 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x79E8 | 5128 bytes |
font_01_sfnt_off00008b62.bin9f99e5871fa29ec012073a2a0f11a24cb163d830e4c361c431f85cbb053c84c1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8B62 | 10776 bytes |
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