MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a service manual. The PDF also hosts a large number of links to other PDFs on static.usrfiles.com, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.
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.ru/wix?keyword=american+standard+freedom+80+service+manual
- https://static.usrfiles.com/ugd/921909_66641bae8dca4c29833474ae62891c4d.pdf
- https://static.usrfiles.com/ugd/b9801a_84e15ab2593a4f88a7449cceb1fe151a.pdf
- https://static.usrfiles.com/ugd/906e9f_b2dfa8e16b644912bf08f9b905bd8dde.pdf
- https://static.usrfiles.com/ugd/b8c837_aafe7d4a9c8c49fa97a38022815f22f7.pdf
- https://static.usrfiles.com/ugd/97368a_acd00156b7ce453f93354cf87ca0635f.pdf
- https://static.usrfiles.com/ugd/99afdc_d7688bc359a1499f986f7c95e710cef6.pdf
- https://static.usrfiles.com/ugd/b8c837_a5518410e21c4054ba0c238592076d4a.pdf
- https://static.usrfiles.com/ugd/66c878_caef94b7e9f248d39450094f05d94e4d.pdf
- https://static.usrfiles.com/ugd/fa6f14_5001838104bc4d8e92d0f37894ebc8fe.pdf
- https://static.usrfiles.com/ugd/b8c837_7b4e67165c1340dc9c99ea615bc83a72.pdf
- https://static.usrfiles.com/ugd/5a1791_05032294e0a847e5b92296faecf00e01.pdf
- https://static.usrfiles.com/ugd/c5d40f_625e95dbdd724710b19bb96bd899b57f.pdf
- https://static.usrfiles.com/ugd/b7306e_645dd66c22c14d8db8924dc1b760f969.pdf
- https://static.usrfiles.com/ugd/b8c837_895bc1339dad4deebd748217b346c316.pdf
- https://static.usrfiles.com/ugd/b8c837_2a6ee4b485994e83a8f61d18f6b92ae3.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_off000046ad.binf7353763e8d05248efd6b0a241fde146dc3293c51c583954ddf1634c6aead32f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x46AD | 5552 bytes |
font_01_sfnt_off0000596c.binb600b4d4da14890ecaf92a353d769b3ebbca2116f0f42c6bab40270257f52034 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x596C | 9824 bytes |
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