MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
This PDF document contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One prominent link directs users to ttraff.com, a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=easy+commodores+piano+pdf', suggesting a lure to a malicious site disguised as a document about pianos. The ML classifier also strongly indicated maliciousness.
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.com/wix?keyword=easy+commodores+piano+pdf
- https://static.usrfiles.com/ugd/b0b521_94364bafeea445dd99f0a2c24772abe1.pdf
- https://static.usrfiles.com/ugd/3649d2_446e901eda794a1fb1c9ee3ab28f2d6c.pdf
- https://static.usrfiles.com/ugd/c8a981_48af27705c654431a1236dfe2598efa8.pdf
- https://static.usrfiles.com/ugd/b8c837_ff00c782878243f186a064583f7b7c58.pdf
- https://static.usrfiles.com/ugd/5af86b_55ac8ba39fa1421e9d80199ae6d80880.pdf
- https://static.usrfiles.com/ugd/b8c837_fad26301f2934494938991633e4346b4.pdf
- https://static.usrfiles.com/ugd/f84671_672ee0876ebd4606837c47030e95da2f.pdf
- https://static.usrfiles.com/ugd/d17951_71f0ca9618a74958ac22159649ffbc69.pdf
- https://static.usrfiles.com/ugd/8b9728_27fa9479d1c34991b24889a2cc2854e4.pdf
- https://static.usrfiles.com/ugd/2b25e8_ebe84764cfc74d8db4707bd43167da76.pdf
- https://static.usrfiles.com/ugd/e23fbb_004d1656b8684588aa7c40bdcb3f59c0.pdf
- https://static.usrfiles.com/ugd/0dd040_01c59ac28ecf4be787f340487558379d.pdf
- https://static.usrfiles.com/ugd/a48928_9794db41930b4eae9fb2738054bc41fc.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_off00004614.bin0244b89092ee9c99d102a075a27acc7f92768674f56429673eca8ce1145cefaa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4614 | 5328 bytes |
font_01_sfnt_off00005829.bind31681468f895935981ce531c1992f93e3784a00405456724fc233fb5799be7f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5829 | 10208 bytes |
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