MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link disguised as information about the 'arxml file format'. This link, https://ttraff.cc/wix?keyword=arxml+file+format, redirects to known malicious infrastructure. The PDF also contains a large number of links to external PDFs, many of which are hosted on static.usrfiles.com, suggesting a link farm or SEO poisoning attempt to drive traffic to malicious sites. The ML classifier 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=arxml+file+format
- https://static.usrfiles.com/ugd/225520_80cbc333ac4d4e8c9abb5536494c2d6a.pdf
- https://static.usrfiles.com/ugd/f65518_2d17967aae174691b24004ecb8117e42.pdf
- https://static.usrfiles.com/ugd/ace02d_e36e68a69b6a41c9b6c39e9e77dfa879.pdf
- https://static.usrfiles.com/ugd/c6ac46_b376849e6f5340acbb7c8952fd6a00c0.pdf
- https://static.usrfiles.com/ugd/e2c250_b8e09581a2e941989ee3bc979a867213.pdf
- https://static.usrfiles.com/ugd/158fb9_d9d0dcc71270400d87d7b17c06e222ce.pdf
- https://static.usrfiles.com/ugd/b8c837_fa43847652b8432c94fa547f8ebc3882.pdf
- https://static.usrfiles.com/ugd/8cbfce_4722803cb5c5484a9a9ae246256d4d3d.pdf
- https://static.usrfiles.com/ugd/b8c837_b36da7f45eda4edb958604127dab88e4.pdf
- https://static.usrfiles.com/ugd/9b5f63_c7a8940874b84cb49fc2907ddbd0570c.pdf
- https://static.usrfiles.com/ugd/b8c837_6da63428f93e4d8aa7d384ada091b80b.pdf
- https://static.usrfiles.com/ugd/bb13a2_8820e67e43014af6b9a53ef18061250f.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000076a8.bin6824086217ba0727c7207e8da9985f2cd830f083aaf52c28cbdd4a04501f723d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76A8 | 20960 bytes |
font_01_sfnt_off0000b9ee.bine30d5bfe4a3eb5a4e25c8dcac5e2bdfce7b7e10f2fa43741ddd105510bfe5f2b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB9EE | 4792 bytes |
font_02_sfnt_off0000ca27.bin74afb8891fae8df62a3b057e5e455476c4eb5ba81a12828a8a0ad105df277527 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA27 | 14640 bytes |
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