MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file was flagged as malicious by an ML classifier and contains a significant number of embedded links, many pointing to external PDF files. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru', which is likely the primary malicious payload delivery mechanism. The document body appears to be a corrupted version of a manual, suggesting a lure to trick users into clicking the embedded links. The presence of numerous links, including those to benign Shopify domains, indicates a potential SEO link farm or a method to obscure the malicious redirector.
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=osterizer%20pulse%20matic%2016%20manual
- http://vozomu.thebellevie.com/uploads/1/3/0/7/130739197/8574598.pdf
- http://files.cnymariancenter.net/uploads/1/3/1/1/131163955/8215727.pdf
- http://files.ramblinghomestead.com/uploads/1/3/0/8/130874496/bc1666.pdf
- http://files.gnostictarotkabbalah.com/uploads/1/3/0/7/130775506/rufufaj.pdf
- https://cdn.shopify.com/s/files/1/0429/0910/6343/files/corine_biotopes_manual.pdf
- https://cdn.shopify.com/s/files/1/0430/8336/6551/files/bachianas_brasileiras_n_5.pdf
- https://cdn.shopify.com/s/files/1/0435/9513/7187/files/86360540969.pdf
- https://cdn.shopify.com/s/files/1/0450/2539/4838/files/all_both_neither_none_either.pdf
- https://cdn.shopify.com/s/files/1/0431/4732/9702/files/mabitasef.pdf
- https://cdn.shopify.com/s/files/1/0436/7053/6345/files/93911341807.pdf
- https://cdn.shopify.com/s/files/1/0447/9765/7248/files/brand_equity_management_system.pdf
- https://cdn.shopify.com/s/files/1/0434/2022/1607/files/rejatoxokebu.pdf
- https://cdn.shopify.com/s/files/1/0431/1393/9101/files/45075940946.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_off00004002.bine305d5cd442a824b16026122728da323e0fede40cab2d5c00a160bcff3510ef4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4002 | 5364 bytes |
font_01_sfnt_off0000522c.bin5d9dd2c1d9838b0a5628841c886dfe02754da70df2b79c1e5a2bf89b96dcc191 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x522C | 9508 bytes |
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