MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.club/pify?keyword=phase+change+diagram+worksheet+with+answers`. This URL is embedded within the document body, suggesting a social engineering lure disguised as educational 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 tactic to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.
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/pify?keyword=phase+change+diagram+worksheet+with+answers
- https://static.usrfiles.com/ugd/1849a1_be9863c7090c4104b0ce30aa7408d62a.pdf
- https://static.usrfiles.com/ugd/bcfc12_b29438d7952a47a1aeb44930d1b88e3c.pdf
- https://static.usrfiles.com/ugd/64db51_d52515473729421a960954ba62723b79.pdf
- https://static.usrfiles.com/ugd/c068f8_8d33ab5cf91e4846b9055ab2925557db.pdf
- https://cdn.shopify.com/s/files/1/0434/7746/7289/files/sim_card_sizes_template.pdf
- https://cdn.shopify.com/s/files/1/0440/5267/6773/files/77432561306.pdf
- https://static.usrfiles.com/ugd/fc840b_1773174d034c43daa445c8144c077f35.pdf
- https://static.usrfiles.com/ugd/e3c460_e5d1f0d27ab54f91a6a7dc29f996f2c5.pdf
- https://static.usrfiles.com/ugd/b8c837_5b43aa52fe5544a390e22e3d4a170f3b.pdf
- https://static.usrfiles.com/ugd/ee9d3f_980642cd6f8f40d49396a9712718bdd3.pdf
- https://static.usrfiles.com/ugd/d7ba0f_9589bc848fda4f5fabd605921c1ff361.pdf
- https://static.usrfiles.com/ugd/e948c1_d1b9d73d76ca4ff6b865116b6d59cfdc.pdf
- https://static.usrfiles.com/ugd/a474dd_b67a88068cbb429ea845f6f960323c76.pdf
- https://static.usrfiles.com/ugd/8127dd_40bb330f2c6142918f6478383db60848.pdf
- https://static.usrfiles.com/ugd/69695d_a8c75d9d6a9f433ebe2b9c9eb04c3baf.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/
- https://static.usrfiles.com/ugd/d7
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000623c.binb349f78d9ad29fbe22844025f38f9de57778f0215e33cfeeebf4e4ec6391b5e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x623C | 5480 bytes |
font_01_sfnt_off000074c4.bind5421e9bb2377602d66dff6472cf7417b6fc366913b4e2c66ce1eb115fbe9e2a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74C4 | 10124 bytes |
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