MALICIOUS
150
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=netacad+cisco+chapter+10+answers'. This URL is embedded within the document body, which appears to be a lure for study material. The presence of a large number of external PDF links, many hosted on 'static.usrfiles.com', further indicates a link farm or SEO poisoning attempt to drive traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
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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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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=netacad+cisco+chapter+10+answers
- https://static.usrfiles.com/ugd/61f964_23cb424922174e00861acc1973b39c3c.pdf
- https://static.usrfiles.com/ugd/b8c837_2897f64348bb49408520d58ad836a485.pdf
- https://static.usrfiles.com/ugd/48f461_7354a78ec3f748c9b73904593e7e8d08.pdf
- https://static.usrfiles.com/ugd/b8c837_3ef50415c0cc45869f8709e6938f417d.pdf
- https://static.usrfiles.com/ugd/3f80ec_ca9d715da91e4d5f8f2d174618c57e81.pdf
- https://static.usrfiles.com/ugd/63022f_6a02bd1835ff4b4282def99fef2bd4c6.pdf
- https://static.usrfiles.com/ugd/a59130_14ee818c38fd4bbaba251944e0e5c90e.pdf
- https://static.usrfiles.com/ugd/b8c837_733be6816e294ab59cf03ba9757d797e.pdf
- https://static.usrfiles.com/ugd/fd3290_7e305fc217584f7dac8051e7d8b4b07a.pdf
- https://static.usrfiles.com/ugd/12f4eb_f907bc00439e4f8d821af4a5e9f7e148.pdf
- https://static.usrfiles.com/ugd/2f3ac6_dea5c91d37614c67987814880e44a1cd.pdf
- https://static.usrfiles.com/ugd/3d0627_08386c2a186d420295c8dc2596751f0a.pdf
- https://static.usrfiles.com/ugd/b8c837_1c47477d0a47479489360f4e2d25dbbc.pdf
- https://static.usrfiles.com/ugd/822ecd_4c898a901b474dcc9dbdc20ad1fe90d9.pdf
- https://static.usrfiles.com/ugd/d54300_a1c4da5827cb44c19d773d95405cfbd7.pdf
- https://static.usrfiles.com/ugd/b8c837_ff99d61fcb7346d69b9b03948866c7bd.pdf
- https://static.usrfiles.com/ugd/ab922d_809301c9ac534b908da8070e0e712e62.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000757f.bin9f91a24221545b37176b93ba8dc8cf3d2eaff1ae5d0bbcec5e84addfecbfdd19 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x757F | 5172 bytes |
font_01_sfnt_off0000871b.bin9197d7cc8bf60204650427b6054266231161dd9ead0154440cf85dc3e8e4b3af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x871B | 10204 bytes |
font_02_sfnt_off0000a9d9.bin9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA9D9 | 4324 bytes |
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