MALICIOUS
150
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'esl worksheets for middle school pdf' and the malicious URL, suggesting a lure to disguise malicious activity. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be directing users to malicious sites via embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
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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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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.com/pify?keyword=esl+worksheets+for+middle+school+pdf
- http://files.leicesterhotshots.co.uk/uploads/1/3/1/3/131398334/jogujowoxi.pdf
- http://files.bikeforlifesd.org/uploads/1/3/2/3/132303009/2643530.pdf
- http://jetaxo.kankyoshiken.com/uploads/1/3/0/7/130775350/4142814.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/domamusuvusuzexi.pdf
- https://cdn.shopify.com/s/files/1/0435/4660/7765/files/tejasomora.pdf
- https://cdn.shopify.com/s/files/1/0441/0929/9864/files/bmw_4_series_convertible_owners_manual.pdf
- https://cdn.shopify.com/s/files/1/0431/3179/7668/files/sozixumulavurazizu.pdf
- https://cdn.shopify.com/s/files/1/0431/7839/3749/files/arabic_comprehension_worksheets.pdf
- https://cdn.shopify.com/s/files/1/0437/8587/9713/files/39861199494.pdf
- https://cdn.shopify.com/s/files/1/0427/7462/6470/files/fundamental_accounting_principles_23rd.pdf
- https://cdn.shopify.com/s/files/1/0430/7828/7513/files/49881304435.pdf
- https://cdn.shopify.com/s/files/1/0433/9754/6149/files/doteduluzo.pdf
- https://cdn.shopify.com/s/files/1/0431/3733/5464/files/fokirowajomubivikuteg.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7645/files/bacteriophage_isolation_protocol.pdf
- https://cdn.shopify.com/s/files/1/0435/9759/4786/files/daxozumu.pdf
- https://cdn.shopify.com/s/files/1/0429/9948/0473/files/zomazavamewavaf.pdf
- https://cdn.shopify.com/s/files/1/0431/6623/6834/files/pipinijibidumeduzu.pdf
- https://cdn.shopify.com/s/files/1/0428/3868/7900/files/55010027365.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_off00006421.bin6a9403fe5c6e344c7208a1aab5f43108fcdec4d234836e8bc1d03d76b16cb8e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6421 | 5296 bytes |
font_01_sfnt_off0000761d.bin4eb0618b7ce355bbd071a93576dbc316d8290a90f5d46950873371272f5e4106 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x761D | 9868 bytes |
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