MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, https://ttraff.ru/wix?keyword=adverbios+de+frecuencia+en+frances+pdf, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text and embedded URLs, further supporting the malicious intent.
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/wix?keyword=adverbios+de+frecuencia+en+frances+pdf
- https://cdn.shopify.com/s/files/1/0440/2990/2998/files/wegewitox.pdf
- https://cdn.shopify.com/s/files/1/0434/0888/3870/files/povutaweza.pdf
- https://cdn.shopify.com/s/files/1/0433/0808/9509/files/articulos_cientificos_cortos_para_nios.pdf
- https://cdn.shopify.com/s/files/1/0434/8670/7876/files/49579778610.pdf
- https://cdn.shopify.com/s/files/1/0429/0327/3628/files/management_of_beneficial_insects_agrimoon.pdf
- https://static.usrfiles.com/ugd/0d9a50_6b9db6d3e87a49d2b01b82c7e04f8fbc.pdf
- https://static.usrfiles.com/ugd/cc089a_a2d6f70782c24cbdb48e4b09c6f675fd.pdf
- https://cdn.shopify.com/s/files/1/0434/8447/9641/files/potential_evapotranspiration.pdf
- https://cdn.shopify.com/s/files/1/0435/5306/3063/files/git_add_permission_denied.pdf
- https://cdn.shopify.com/s/files/1/0431/4493/7623/files/business_intelligence_que_es.pdf
- https://cdn.shopify.com/s/files/1/0437/8869/7761/files/brand_identity_example.pdf
- https://cdn.shopify.com/s/files/1/0433/4200/4375/files/rabivawi.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_off00005ee8.bin65181e962dc27f91cb209139f413578adc078eae0f1539f8bfa940a8f4476be2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EE8 | 5108 bytes |
font_01_sfnt_off00007048.bine09a1875e5699f012b04ededc0becec77cb9b4b6331c62c862c763a91d32d28b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7048 | 14824 bytes |
font_02_sfnt_off00009d4e.bincd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D4E | 4324 bytes |
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