MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a mass of external links, masquerading as a grammar worksheet, with the primary malicious link pointing to a known redirector. The document body itself is heavily obfuscated but contains the malicious URL. The ML classifier strongly indicated maliciousness.
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.link/wix?keyword=conjuguemos+grammar+worksheet+preterite+tense+regular+verbs+answers
- https://cdn.shopify.com/s/files/1/0460/7918/0964/files/lemon_tree_worksheet_esl.pdf
- https://cdn.shopify.com/s/files/1/0435/4631/2863/files/21817535795.pdf
- https://cdn.shopify.com/s/files/1/0436/9501/4056/files/46250192326.pdf
- https://cdn.shopify.com/s/files/1/0431/8307/9584/files/1133072569.pdf
- https://cdn.shopify.com/s/files/1/0481/2937/6407/files/siop_features_checklist.pdf
- https://11896bba-f9bb-4c8f-ae78-31dc543d824a.filesusr.com/ugd/135178_578d265135464233a8fcf3a8f0950906.pdf?index=true
- https://045589e0-8df5-40f8-ac04-ed02ebc69b08.filesusr.com/ugd/8c0e65_06401ec62b3344ad9b6fc808413a229b.pdf?index=true
- https://f304a04a-de71-424f-a1c4-53739fe1c2df.filesusr.com/ugd/66f7a0_67585b24420646ccb034d1de779b904c.pdf?index=true
- https://338b4140-b0ca-4705-a12c-7d6cacfe3066.filesusr.com/ugd/314c35_4df00b81b80d48cc95f2aecbf14ed47f.pdf?index=true
- https://192d5321-2acc-4810-af99-4a6f7e28f084.filesusr.com/ugd/87b9a8_5bddd7fda0df44ac9fddc8d4d2777bcf.pdf?index=true
- https://d51b215f-117b-4824-bc2c-e00e697574f2.filesusr.com/ugd/21b4a7_dd5edaf102df4e7ba1b365def784aad2.pdf?index=true
- 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_off00004bac.bin9b030e0126876eb82f1b880f5e3c547e1997b8bcf3e2fd3a6bf46c180a134569 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4BAC | 5572 bytes |
font_01_sfnt_off00005e88.bin473154f057523e7dd35eb1cdd2e370e522e179b577b6922376ef20983fdb3ccf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E88 | 10844 bytes |
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