MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/wb?keyword=kindergarten%20lesson%20plan%20format%20pdf'. The document body also contains this URL, suggesting a lure to trick users into clicking malicious links under the guise of a lesson plan. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.
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=kindergarten%20lesson%20plan%20format%20pdf
- http://files.awakendancetheater.com/uploads/1/3/2/7/132740488/c8b5436a64cf.pdf
- http://files.dursochiropractic.com/uploads/1/3/1/3/131383284/2582778.pdf
- https://cdn.shopify.com/s/files/1/0432/9416/3109/files/58075385070.pdf
- https://cdn.shopify.com/s/files/1/0432/8236/6624/files/26796026846.pdf
- https://cdn.shopify.com/s/files/1/0431/2131/1910/files/mongodb_update_document.pdf
- https://cdn.shopify.com/s/files/1/0436/1401/1555/files/xaxej.pdf
- https://cdn.shopify.com/s/files/1/0428/6388/6495/files/77375615413.pdf
- https://cdn.shopify.com/s/files/1/0429/6930/1151/files/kopinivikixegoro.pdf
- https://cdn.shopify.com/s/files/1/0434/1907/4716/files/desk_calendar_2019_template_free.pdf
- https://cdn.shopify.com/s/files/1/0436/7230/5817/files/potufofefe.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000045e1.bine0a799ecbc0a769bded9fc7e96b4c629c46918425ea4c78f86d8ca75e36b793f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x45E1 | 5116 bytes |
font_01_sfnt_off0000572c.bin53092c4245484f97e6fdfa7732a9b5c507050d190848b6c5b0495dc4e9ede850 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x572C | 13472 bytes |
font_02_sfnt_off00008141.bin4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8141 | 4324 bytes |
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