MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=all+biology+definitions+pdf, is used to redirect users. The document body, though heavily obfuscated, contains this URL, suggesting a lure to external malicious content. The ML classifier strongly indicates 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.ru/pify?keyword=all+biology+definitions+pdf
- http://files.drchristinebacon.com/uploads/1/3/0/8/130815093/5578328.pdf
- http://files.jllongbooks.com/uploads/1/3/2/6/132682542/buliduri.pdf
- http://files.thecentreofthecosmos.com/uploads/1/3/2/3/132302710/bizitosofurepajiv.pdf
- http://files.lettucefarm.org/uploads/1/3/0/7/130739084/9c03bfe15a.pdf
- http://files.katessocialmedia.com/uploads/1/3/0/7/130775200/b3b1cdd71e20985.pdf
- https://cdn.shopify.com/s/files/1/0439/3641/5899/files/62939476385.pdf
- https://cdn.shopify.com/s/files/1/0433/3659/7654/files/kobudon.pdf
- https://cdn.shopify.com/s/files/1/0432/8561/0654/files/74924398145.pdf
- https://cdn.shopify.com/s/files/1/0435/9254/8511/files/8477060708.pdf
- https://cdn.shopify.com/s/files/1/0436/3278/7609/files/46779417337.pdf
- https://cdn.shopify.com/s/files/1/0431/8471/7979/files/moduzezivofig.pdf
- https://cdn.shopify.com/s/files/1/0440/6951/9510/files/gunukopavipawokutepa.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdf
- https://cdn.shopify.com/s/files/1/0434/5544/7201/files/the_lemonade_war_download.pdf
- https://cdn.shopify.com/s/files/1/0431/7695/1974/files/11445021006.pdf
- https://cdn.shopify.com/s/files/1/0431/1141/5970/files/prevencion_de_cancer_de_mama_imss.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_off0001ac0f.bin7272295374c008ac9a91d3fdaad027095cbeee325730b85e68fe9eb22f9f3305 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1AC0F | 5136 bytes |
font_01_sfnt_off0001bda3.bin023c45010dce4d7a4da095286e3d7d3d76847fc5b0dc6655222b71df35b29d72 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1BDA3 | 10420 bytes |
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