MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'worksheets for kindergarten free' and a URL that appears to be part of a link farm designed for SEO manipulation. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring users to malicious sites via these links.
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://ttraff.ru/wb?keyword=worksheets%20for%20kindergarten%20free
- http://files.maltron.com/uploads/1/3/1/3/131379296/wezukiwusafapelate.pdf
- https://cdn.shopify.com/s/files/1/0447/5063/5162/files/g_unit_beg_for_mercy.pdf
- https://cdn.shopify.com/s/files/1/0437/4223/2725/files/xiwut.pdf
- https://cdn.shopify.com/s/files/1/0432/7515/7670/files/94930846972.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf
- https://cdn.shopify.com/s/files/1/0437/3266/4481/files/zunokawenip.pdf
- https://cdn.shopify.com/s/files/1/0430/0174/1463/files/zugobotuliwobutuwuzarigu.pdf
- https://cdn.shopify.com/s/files/1/0429/6792/4899/files/36974407551.pdf
- https://cdn.shopify.com/s/files/1/0427/7128/4135/files/universal_self_scorer_biology_book_download.pdf
- https://cdn.shopify.com/s/files/1/0428/2174/6847/files/71758638768.pdf
- https://cdn.shopify.com/s/files/1/0429/2182/0319/files/89036636168.pdf
- https://cdn.shopify.com/s/files/1/0435/7675/4344/files/mizopil.pdf
- https://cdn.shopify.com/s/files/1/0430/5669/3397/files/2496780669.pdf
- https://cdn.shopify.com/s/files/1/0436/2996/9561/files/72777967575.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005e9d.binc0016a48e325bc93162ca810f7142148a2ba773c4d31d828c1b9782000f8c376 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E9D | 5216 bytes |
font_01_sfnt_off00007064.bin007459a9cf660892fdfcc265cfe65373d75e48eb9f17e482c21e3ad35a8927e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7064 | 9996 bytes |
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