MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links that point to a known malicious redirector, ttraff.ru, which is disguised with a search query for 'toefl junior practice test pdf'. The ML classifier strongly indicated maliciousness, and the PDF structure itself contains a large number of external links, suggesting a link farm or redirection tactic. No scripts were extracted, but the primary malicious behavior is the redirection to the malicious URL.
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=toefl+junior+practice+test+pdf
- https://static.usrfiles.com/ugd/b8c837_685bba00e4ab4db9b3a08a512e85b923.pdf
- https://static.usrfiles.com/ugd/5438e3_c9f6bb4d74ee4932b467d341b1dd10f4.pdf
- https://static.usrfiles.com/ugd/9b5f63_fe92ce3f323a4db2becdcf9b154cfcd9.pdf
- https://static.usrfiles.com/ugd/b444d4_5115c76bfebd4018b731c5f103f9eeca.pdf
- https://static.usrfiles.com/ugd/b8c837_c762cac771034d9f9681d8e751bb0e0c.pdf
- https://static.usrfiles.com/ugd/269bb8_6f53de3cab86454ba8f102de43d29e52.pdf
- https://static.usrfiles.com/ugd/b8c837_d022d14d9856478c8843aa2368136461.pdf
- https://static.usrfiles.com/ugd/3be3a7_bade3001604b44868363b5d6f8da255d.pdf
- https://static.usrfiles.com/ugd/565485_10fee8fbf364414c9a730466a28b1bcd.pdf
- https://static.usrfiles.com/ugd/b8c837_1419d63d92f34f3ca6cab4cd2a702b00.pdf
- https://static.usrfiles.com/ugd/d78803_e988b393dcdd4935aafbf1ce961d2944.pdf
- https://static.usrfiles.com/ugd/b8c837_652ec82e4edf4d4abc86e2035eafe8e9.pdf
- https://cdn.shopify.com/s/files/1/0430/3912/9751/files/edit_free_mac_os_x.pdf
- https://cdn.shopify.com/s/files/1/0432/4212/7527/files/76389516455.pdf
- https://cdn.shopify.com/s/files/1/0433/4639/5304/files/86353897740.pdf
- https://cdn.shopify.com/s/files/1/0432/9983/1968/files/zixemiposejigub.pdf
- https://cdn.shopify.com/s/files/1/0434/4581/3414/files/wutokamajirobolofupul.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_off000053dc.bin5bed737a3fbd7e8111969f31c59833f97db0b2545c176f4d1c658d304403addf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x53DC | 5172 bytes |
font_01_sfnt_off00006587.binf3e11c7dc8badfc0f85897af288590c2fb22730522f257457b51fb008dbab827 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6587 | 9976 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.