MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on static.usrfiles.com, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to 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.cc/wix?keyword=grok+learning+answers+python+2018
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b58d21_9aea301433d54850a23a86285a35a041.pdf
- https://static.usrfiles.com/ugd/fdee49_156707800ad34fcba26501624c060589.pdf
- https://static.usrfiles.com/ugd/67f5f7_e0cf6ea41e0247aa83885368174dec31.pdf
- https://static.usrfiles.com/ugd/9421c8_57004961294d44c3aab7838986dfc41b.pdf
- https://static.usrfiles.com/ugd/197ed4_0481a5673d324b0da1bb5d1e4110a929.pdf
- https://static.usrfiles.com/ugd/d162e3_478806545e4b41f1abfd103c0839079a.pdf
- https://static.usrfiles.com/ugd/de60da_7b887ce258ef4d6188ff6122b62977a1.pdf
- https://static.usrfiles.com/ugd/d5d855_497ef405f3ae4162a60669975be62e6c.pdf
- https://static.usrfiles.com/ugd/ca300b_d99a3731706a423ab0bfbe1974ea8d30.pdf
- https://static.usrfiles.com/ugd/b8c837_a84e7df5727f4f7096af69625a29be4f.pdf
- https://static.usrfiles.com/ugd/eda9ba_7d241ae0db2c4aa0b67172f2ea6fd249.pdf
- https://static.usrfiles.com/ugd/086daf_45adf0054c58417fa35cbab92c075bf7.pdf
- https://static.usrfiles.com/ugd/ae059d_5f6495e37ee64e9194b3fbded22e5a37.pdf
- https://cdn.shopify.com/s/files/1/0429/6956/3290/files/metodos_anticonceptivos_inyectables.pdf
- https://cdn.shopify.com/s/files/1/0431/2032/8865/files/64599537065.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000095df.bin3ee9e6b38a3182ffca8602d60a2eeaf419b70d378aa0fc35ac0c4a01beedd19e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x95DF | 5892 bytes |
font_01_sfnt_off0000aa03.bin07e072a8b1c8297005dc88a14b36e377b9bc730167d7f38ef799807d497a62fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA03 | 15660 bytes |
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