MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to academic resources, suggesting a lure to trick users into clicking the malicious links. No scripts were extracted from this sample.
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=fundamentals+of+computer+systems+4th+edition+pdf
- http://files.claytonguy.com/uploads/1/3/0/7/130739517/1de1fd00a.pdf
- http://nikun.robertacervelli.com/uploads/1/3/1/6/131637257/7552573.pdf
- http://files.tantrapsychic.com/uploads/1/3/1/0/131070457/9535652.pdf
- https://cdn.shopify.com/s/files/1/0429/2732/5343/files/temevelazelarokodimakev.pdf
- https://cdn.shopify.com/s/files/1/0432/4674/7803/files/41119493536.pdf
- https://cdn.shopify.com/s/files/1/0428/5736/5670/files/bibliografia_estilo_apa_de_un.pdf
- https://cdn.shopify.com/s/files/1/0429/8866/7039/files/47824613008.pdf
- https://cdn.shopify.com/s/files/1/0441/4645/8776/files/sunesikimikosasixo.pdf
- https://cdn.shopify.com/s/files/1/0440/9311/2472/files/cuaderno_de_vacaciones_de_blackie_books.pdf
- https://cdn.shopify.com/s/files/1/0431/2553/8973/files/windows_10_remove_game_bar.pdf
- https://cdn.shopify.com/s/files/1/0429/5468/6620/files/27513695553.pdf
- https://cdn.shopify.com/s/files/1/0428/1358/7623/files/95141619034.pdf
- https://cdn.shopify.com/s/files/1/0434/8405/3669/files/21137469110.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_off000043c5.bine9a48059acca1f9f82ffae9f5a40651e06aec6fd77a152896c077e8be229dc7e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x43C5 | 5540 bytes |
font_01_sfnt_off00005683.bin219ef47d2140e8d2fa14995c378cd06af34da882f396e4b0c974647e6f18ab14 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5683 | 9956 bytes |
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