MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One of the primary links, https://ttraff.ru/wix?keyword=ejercicios+de+metrica+resueltos+pdf+1+eso, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same educational topic and the malicious URL, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
-
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.
-
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.
-
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.
-
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/wix?keyword=ejercicios+de+metrica+resueltos+pdf+1+eso
- https://static.usrfiles.com/ugd/c068f8_d7520036d22748c285dd84bc6737964e.pdf
- https://static.usrfiles.com/ugd/696b8a_4ddb391ff07d4f92bbe36f49367d44c1.pdf
- https://static.usrfiles.com/ugd/ed64d2_a849be08893947099215994b0a6a51d1.pdf
- https://static.usrfiles.com/ugd/b8c837_db36a262cf0345a29e1921386e480fe3.pdf
- https://static.usrfiles.com/ugd/b8c837_a050d340367d4882b5b6f33fa01fca37.pdf
- https://cdn.shopify.com/s/files/1/0461/9380/3415/files/29746747476.pdf
- https://cdn.shopify.com/s/files/1/0440/6591/5045/files/gofaxuboxujatofurasegajo.pdf
- https://cdn.shopify.com/s/files/1/0430/7949/9940/files/kixejijetixijerubepu.pdf
- https://cdn.shopify.com/s/files/1/0433/9240/1573/files/wulimalibozagunilanok.pdf
- https://cdn.shopify.com/s/files/1/0432/3809/7051/files/definition_and_types_of_migration.pdf
- https://cdn.shopify.com/s/files/1/0434/5144/9504/files/81216209656.pdf
- https://static.usrfiles.com/ugd/06497e_bd2589722c9e4cb88145b2e2ccd261d7.pdf
- https://static.usrfiles.com/ugd/b8c837_3c7ca42a9a1147c2a5e7db55848aa109.pdf
- https://static.usrfiles.com/ugd/b8c837_510266711ea44240aaaeddf1757f5147.pdf
- https://static.usrfiles.com/ugd/b8c837_6c83d6f5ee0a4f86b957aad8ec816b6c.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_off000076c8.bin3597ad0e8e11aaabf669dd5a996589caca4769d49ef537f5d0fcd7bb8885423a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76C8 | 5384 bytes |
font_01_sfnt_off00008908.binee32f4c310e4ddfa7c02fbd4d852a04bfb3e0218346857538c968cdc614dfcb5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8908 | 17720 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.