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 embedded links, many pointing to PDF files hosted on static.usrfiles.com, forming a link farm. One of these links redirects to `https://ttraff.cc/wix?keyword=nccn+guidelines+melanoma+imaging`, which is flagged as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure, likely for phishing or malware delivery. 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.cc/wix?keyword=nccn+guidelines+melanoma+imaging
- https://static.usrfiles.com/ugd/15ebe2_556f88968bcd496dbeb4df1619744577.pdf
- https://static.usrfiles.com/ugd/c3f88d_b352f148480f4657928b9be0952abb28.pdf
- https://static.usrfiles.com/ugd/f65518_a88768f7e8e8407a82f5d27cc6175589.pdf
- https://static.usrfiles.com/ugd/b8c837_836129c2b9ef4e7ebe5430cd1340afb1.pdf
- https://static.usrfiles.com/ugd/b8c837_74465752283444388758f57b94ea23c3.pdf
- https://cdn.shopify.com/s/files/1/0435/5486/5320/files/22234811732.pdf
- https://cdn.shopify.com/s/files/1/0429/3135/5807/files/13866654198.pdf
- https://static.usrfiles.com/ugd/b8c837_b2fbf2502bc746fe86a3c4dec6c5054f.pdf
- https://static.usrfiles.com/ugd/3e9e83_8112090330804ff6969a55634c09fe88.pdf
- https://static.usrfiles.com/ugd/b50c55_1c4139e8b3904ba8b9c51c8a0a3b378e.pdf
- https://static.usrfiles.com/ugd/89363e_2ceabbee309b4d14823680ebe54731be.pdf
- https://cdn.shopify.com/s/files/1/0440/5339/7654/files/i_found_amber_run_flute_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0434/0331/3308/files/sony_bravia_android_tv_49.pdf
- https://cdn.shopify.com/s/files/1/0434/1052/2277/files/13015839695.pdf
- https://cdn.shopify.com/s/files/1/0438/0046/1474/files/jugeb.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_off0000606c.bin84eac4bc12bccb4150634412504237d0a8d877c0fb14cc4402c61548fdca26df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x606C | 5132 bytes |
font_01_sfnt_off000071d5.bindb5a42c25660b92c2aad287910c14953a389e6ed86e9f3a8c5febdff78c2315a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71D5 | 10608 bytes |
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