MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded URLs, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a redirector link to ttraff.com, indicating malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the primary redirect URL.
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.com/wix?keyword=apostila+de+analises+clinicas+para+concursos+pdf
- https://cdn.shopify.com/s/files/1/0428/8613/5961/files/vetujutivupuzoborefu.pdf
- https://cdn.shopify.com/s/files/1/0431/5840/5275/files/fedulumid.pdf
- https://cdn.shopify.com/s/files/1/0434/4764/8412/files/xiwupadodajosatateketaxe.pdf
- https://cdn.shopify.com/s/files/1/0464/7301/9560/files/mijalokoxofezeto.pdf
- https://cdn.shopify.com/s/files/1/0431/2412/9952/files/formato_st2_imss.pdf
- https://static.usrfiles.com/ugd/b8c837_61462ffe63534f3cb1f39665c46fd009.pdf
- https://static.usrfiles.com/ugd/b8c837_a070c81b71a24ae6b21dd10e15ed75aa.pdf
- https://static.usrfiles.com/ugd/b8c837_7ebabf572332487ba4a4f7712ca3cfcc.pdf
- https://static.usrfiles.com/ugd/66c878_e9d394c590d046b8b7c86b0b5a5bbb43.pdf
- https://cdn.shopify.com/s/files/1/0430/9755/5093/files/40518222293.pdf
- https://cdn.shopify.com/s/files/1/0431/1895/2610/files/modibakonapomiz.pdf
- https://cdn.shopify.com/s/files/1/0428/4206/3004/files/festival_off_avignon_programme.pdf
- https://cdn.shopify.com/s/files/1/0468/0086/3383/files/71613714415.pdf
- https://cdn.shopify.com/s/files/1/0435/5453/7624/files/10412153806.pdf
- https://static.usrfiles.com/ugd/a107db_606a1bf7e0334d758d1e01bd2c945e42.pdf
- https://static.usrfiles.com/ugd/16a96a_596876b02a4a44d19ab031cb8eb448ac.pdf
- https://static.usrfiles.com/ugd/b8c837_93acebf79db545608ff8a3e82f9c4b1b.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_off000064f3.binf23af6be763ae1a12b4b4cf4f278e2a8e5fbe964f0b7d83fe5f789636e0bfdde |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64F3 | 5140 bytes |
font_01_sfnt_off00007671.bin31e1a625a8ca4dedf9078d53109571755f5b72d77a561e7b84012e7b08208b11 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7671 | 13552 bytes |
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