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.club, which is presented as "Hfss advertising guidelines". The document also contains a large number of embedded links to static.usrfiles.com, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, and the presence of a malicious redirector indicates an attempt to lead the user to a harmful site.
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.club/wix?keyword=hfss+advertising+guidelines
- https://static.usrfiles.com/ugd/49f5ef_5e1033a001454fa1951f048789a0e640.pdf
- https://static.usrfiles.com/ugd/269bb8_a619f9e119d742a39a885e743f32efc1.pdf
- https://static.usrfiles.com/ugd/0e2875_234f3995576240cfac15418f34938852.pdf
- https://static.usrfiles.com/ugd/b8c837_9b0baae31ebb478ab4b0076d79f0c987.pdf
- https://static.usrfiles.com/ugd/3f80ec_b06f252fb0f7481d80db3c70ff078b40.pdf
- https://static.usrfiles.com/ugd/cc3ca9_a4fd7dde11364c3693a634b15a0b97e5.pdf
- https://static.usrfiles.com/ugd/a3b54b_af31790c2e1549259c0153bc94c3ec06.pdf
- https://static.usrfiles.com/ugd/0049ca_e1006d99052e42a29557bac8c867d2b2.pdf
- https://static.usrfiles.com/ugd/0df15e_31f8f0094dfb46899fcebef51838ac12.pdf
- https://static.usrfiles.com/ugd/b98abb_2b922ec22f93435aa8ca57526af6830f.pdf
- https://static.usrfiles.com/ugd/b8c837_d0f772c3b4b14dcb99e4c7c730263c97.pdf
- https://static.usrfiles.com/ugd/85d67f_8e06b9b4187842bd9ec05b57b486ccfc.pdf
- https://cdn.shopify.com/s/files/1/0431/6443/4583/files/androids_dokkan_tier_list.pdf
- https://cdn.shopify.com/s/files/1/0429/9322/1783/files/65315122667.pdf
- https://cdn.shopify.com/s/files/1/0433/7165/9414/files/yading_china_travel_guide.pdf
- https://cdn.shopify.com/s/files/1/0435/4985/1811/files/9787870250.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_off00008aac.bin250cf8fb37cbcdb13331e421babc044dadd17f0be78ffe6b9a44171c9b6433ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8AAC | 5096 bytes |
font_01_sfnt_off00009c1c.bin3506abdda7067ac9d656ed82bbd151f078ab9dbbb8628c113ed6922213d25a74 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9C1C | 10424 bytes |
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