MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of external links, many of which point to a link farm hosted on static.usrfiles.com. One of these links, https://ttraff.cc/wix?keyword=collecting+case+knives+identification+and+price+guide+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to collecting knives, intended to trick users into clicking the malicious link. The ML classifier strongly indicates 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.cc/wix?keyword=collecting+case+knives+identification+and+price+guide+pdf
- https://static.usrfiles.com/ugd/b8c837_dacb405f5c0948269e918c9157dbddd1.pdf
- https://static.usrfiles.com/ugd/ecec20_c6a6a4130dab45499b3fd9cbbaa355ef.pdf
- https://static.usrfiles.com/ugd/b8c837_4bdc2a053ca7425b93621260f8a0527d.pdf
- https://static.usrfiles.com/ugd/b8c837_6a4a28552da14ee794c5e4c0b8485d81.pdf
- https://static.usrfiles.com/ugd/238140_984efecfae614c60b45362b309cecc61.pdf
- https://static.usrfiles.com/ugd/3eed2b_a31c25a39b044926aa7d779b98889b3f.pdf
- https://static.usrfiles.com/ugd/856cea_82e4ac7732e2428d957071cc8ca0818f.pdf
- https://cdn.shopify.com/s/files/1/0431/6472/9512/files/classic_wow_alliance_leveling_guide.pdf
- https://cdn.shopify.com/s/files/1/0431/5552/1695/files/dw_meaning_slang.pdf
- https://cdn.shopify.com/s/files/1/0427/5775/0951/files/xusikuduzozelagof.pdf
- https://static.usrfiles.com/ugd/64d889_ce27e2e5b0364854b331786a9cb486cb.pdf
- https://static.usrfiles.com/ugd/b8c837_f721d03694f1425494fa6545c4b64ef2.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_off00006697.bin7f73e95bc552b6222c699646278f2d08e09ca204fec643582d980b0bcbc6af45 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6697 | 5352 bytes |
font_01_sfnt_off000078e1.bina323aebd6d9e59818e494684667b447985b69eb9304b4ba627ed0fb82f0499a9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78E1 | 10792 bytes |
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