MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO poisoning. One of the primary links, 'https://ttraff.ru/pify?keyword=tecnicas+de+aprendizaje+activo+pdf', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body itself is heavily obfuscated and contains the same URLs, suggesting a coordinated effort to drive traffic to malicious sites.
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=tecnicas+de+aprendizaje+activo+pdf
- http://files.stefiecakesandtreats.com/uploads/1/3/1/3/131380042/takewewusemerepasub.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.pdf
- https://cdn.shopify.com/s/files/1/0448/1178/0257/files/62893460084.pdf
- https://cdn.shopify.com/s/files/1/0430/3811/3955/files/detective_conan_episode_guide.pdf
- https://cdn.shopify.com/s/files/1/0427/9658/1020/files/vazoruxukiwa.pdf
- https://cdn.shopify.com/s/files/1/0431/6043/6900/files/jevebarujegas.pdf
- https://cdn.shopify.com/s/files/1/0432/4907/4336/files/botijozulozorurobipo.pdf
- https://cdn.shopify.com/s/files/1/0429/0409/2839/files/consulente_automobilistico_libro.pdf
- https://cdn.shopify.com/s/files/1/0430/8090/8951/files/rokidodokolowerekenomipax.pdf
- https://cdn.shopify.com/s/files/1/0444/8750/8135/files/functional_programming_in_java_manning_download.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_off00005cbe.bind6c8e7079b2ad7ce701a0520e4da56aaea71bb69eaf4cc074c15a9a47fb660ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5CBE | 5252 bytes |
font_01_sfnt_off00006eb7.bin385e294b78bb20e115e34b9646e43752b47e2604bfb4fadc583c9a2c2b2b7fed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6EB7 | 11320 bytes |
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