MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to educational worksheets. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The primary attack vector appears to be social engineering through deceptive links within the document.
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.cc/wb?keyword=worksheet%20based%20on%20average%20for%20class%205
- http://fazolu.tongaheadstones.net/uploads/1/3/1/4/131483281/dagug-vulolinukavad.pdf
- https://cdn.shopify.com/s/files/1/0438/2749/5074/files/rutudovitunure.pdf
- https://cdn.shopify.com/s/files/1/0427/8150/7740/files/logorasojopewafalize.pdf
- https://cdn.shopify.com/s/files/1/0437/0441/8459/files/babovobevemuwatijori.pdf
- https://cdn.shopify.com/s/files/1/0433/1244/7652/files/kujafesubegadi.pdf
- https://cdn.shopify.com/s/files/1/0438/4541/9165/files/99_crafting_guide.pdf
- https://cdn.shopify.com/s/files/1/0432/7030/7995/files/sobom.pdf
- https://cdn.shopify.com/s/files/1/0428/2908/6876/files/16799609582.pdf
- https://cdn.shopify.com/s/files/1/0435/2317/8656/files/50800972922.pdf
- https://cdn.shopify.com/s/files/1/0435/0581/1608/files/81807825763.pdf
- https://cdn.shopify.com/s/files/1/0434/3041/2454/files/deficiencia_de_vitamina_b8.pdf
- https://cdn.shopify.com/s/files/1/0427/8901/1612/files/61987620109.pdf
- https://cdn.shopify.com/s/files/1/0436/5172/7513/files/online_reservation_form.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_off0000649e.bine290d30db9b27e27854d593c16b3cdeaff1ee08ed5ba06de04e47128f4cf682d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x649E | 5684 bytes |
font_01_sfnt_off00007808.bind1a6b20292e9dece06ee8c8130876ef87384c6ee9f1460ca484d531c9549c9e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7808 | 10220 bytes |
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