MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, disguised as an English grammar test. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the malicious URL and numerous benign-looking URLs, likely part of a link farm to improve search engine ranking and obscure the malicious destination. No scripts were extracted from this sample.
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.cc/wix?keyword=english+grammar+test+intermediate
- https://static.usrfiles.com/ugd/5d2cf3_a125b8e627b44ddc901d19c9a1da564e.pdf
- https://static.usrfiles.com/ugd/b8c837_7f6ba444c7db4b49a039b5a1b5b8059a.pdf
- https://static.usrfiles.com/ugd/834936_003d424d5a8841ccb75ec666f238f54e.pdf
- https://static.usrfiles.com/ugd/b8c837_a2c4bba5127a4c2b93fd32c817457492.pdf
- https://static.usrfiles.com/ugd/c63dba_564bcbffce054b3493527de913e26c8d.pdf
- https://cdn.shopify.com/s/files/1/0434/0459/1271/files/32819373922.pdf
- https://cdn.shopify.com/s/files/1/0433/9000/9502/files/35794512227.pdf
- https://cdn.shopify.com/s/files/1/0434/5279/2982/files/foguzagejunibu.pdf
- https://cdn.shopify.com/s/files/1/0437/8663/3374/files/dedomiruxadajosop.pdf
- https://cdn.shopify.com/s/files/1/0430/7035/7661/files/fifikijurotekotapamus.pdf
- https://static.usrfiles.com/ugd/b8c837_4a43290e0ff74657842655e5bd14445d.pdf
- https://static.usrfiles.com/ugd/b8c837_5714bae28ead4cc998467ce501fe75ef.pdf
- https://static.usrfiles.com/ugd/585b1d_34d29ced5ea34b5a870a04316e396dac.pdf
- https://static.usrfiles.com/ugd/79cb75_f7dbacfbe79d4a25a4f64f6c9cf32d79.pdf
- https://static.usrfiles.com/ugd/0779a3_8a64a20c14134143b2468e40f4481bd4.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_off00005343.bin8fe706b201b6d14351e4a8cbbe64150121c98b5227433f7973eb0cdae437b73a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5343 | 5196 bytes |
font_01_sfnt_off000064b8.bin8baa83674e5a3eca0770b515363c10c9c0f3e0f0e5541b6ebcd40554f626a323 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64B8 | 10288 bytes |
font_02_sfnt_off0000881e.binbf0029f2f65a8d03fc5bc6dac3f89872448ee76276b38fcd79a4881ba082e330 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x881E | 16508 bytes |
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