MALICIOUS
128
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a malicious redirector link pointing to 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'Toefl ibt practice test free pdf' and a call-to-action phrase, suggesting a lure. The PDF also hosts a large number of external links, many pointing to 'static.usrfiles.com', indicating a link farm strategy. The primary malicious IOC is the redirector URL.
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/wix?keyword=toefl+ibt+practice+test+free+pdf
- https://static.usrfiles.com/ugd/b8c837_4493e59051774c8fa2fe4a3c12387574.pdf
- https://static.usrfiles.com/ugd/b8c837_4afe074db90c414882ada8697861c3ba.pdf
- https://static.usrfiles.com/ugd/b8c837_905ba10ac67c468cbc64db95c1d6ab47.pdf
- https://static.usrfiles.com/ugd/b8c837_d22cdb9f5e104815a60ba5cfedbbd167.pdf
- https://static.usrfiles.com/ugd/b8c837_ad786e8db1894112b68a834a17b14b18.pdf
- https://static.usrfiles.com/ugd/b8c837_309a309bfe6143808f7624433e6b85f0.pdf
- https://static.usrfiles.com/ugd/b8c837_d51f0409b5254051a863753429337874.pdf
- https://static.usrfiles.com/ugd/b8c837_6a6cfab041d04de4a6613ab615cb283b.pdf
- https://cdn.shopify.com/s/files/1/0431/2724/2906/files/brother_hl2270dw_driver.pdf
- https://cdn.shopify.com/s/files/1/0437/5746/9845/files/66638398223.pdf
- https://cdn.shopify.com/s/files/1/0429/7926/2615/files/29601809790.pdf
- https://cdn.shopify.com/s/files/1/0427/6345/2583/files/66378752595.pdf
- https://cdn.shopify.com/s/files/1/0431/4651/0504/files/farexoruxonuvuneratudove.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000a2a7.bind737141f7f7e9a29aa9eb34ceb0f00db9f8c24261bb8a75dd1e512b61b5a6180 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA2A7 | 5236 bytes |
font_01_sfnt_off0000b472.bin6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB472 | 1800 bytes |
font_02_sfnt_off0000bd02.bin3773bec3d84987e0e6c1f283901509990169920176438aba9bf17f158c82631c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD02 | 10988 bytes |
font_03_sfnt_off0000e27e.bin4954ddec54c61b6acc7eddbac306bc890d05f3afdfcf3ae890c7612da0a7d668 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE27E | 16376 bytes |
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