MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a lure related to a Medicare levy surcharge exemption form. It embeds a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous external PDF links, many pointing to static.usrfiles.com, suggests a link farm or redirection strategy to obscure the final malicious destination.
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.me/wix?keyword=medicare+levy+surcharge+exemption+form
- https://static.usrfiles.com/ugd/bae363_feee4149c97b45a59ea1057943b411b1.pdf
- https://static.usrfiles.com/ugd/ce5d00_76e56dab48524620bc9feee2ce7ccc70.pdf
- https://static.usrfiles.com/ugd/b8c837_242d8a42896446b8bdb5e110d5094ce0.pdf
- https://static.usrfiles.com/ugd/234f58_a791c926d88646e4bd47bba05ea076ef.pdf
- https://static.usrfiles.com/ugd/238140_13dc8dc696b0472cbb467f143b3e52aa.pdf
- https://static.usrfiles.com/ugd/de65f7_c11f79b13af2461a91448503a7b5280f.pdf
- https://static.usrfiles.com/ugd/11f207_766283a613a3480e80562e27a2544327.pdf
- https://static.usrfiles.com/ugd/0d2908_a09dfa9c6e2942fc8fe992fd2c36fc15.pdf
- https://static.usrfiles.com/ugd/b27199_9db15b1325804c4489000e5e4c49a812.pdf
- https://static.usrfiles.com/ugd/c88839_f3b1ae8d5502475f9c44983a1b88f0a4.pdf
- https://static.usrfiles.com/ugd/238140_a1e27efddb734cb7973437c648a22c8c.pdf
- https://cdn.shopify.com/s/files/1/0437/1621/4939/files/85627965019.pdf
- https://cdn.shopify.com/s/files/1/0432/5467/7662/files/fotizinifidaxela.pdf
- https://cdn.shopify.com/s/files/1/0432/5369/4626/files/80666265033.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_off000063e9.bincc714c52c7d2c927f8780c92dff1b3af284e836ca4972d0ecff8aa574f2096af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x63E9 | 5804 bytes |
font_01_sfnt_off0000779f.bincec7971f99cd0c8007647c3203a5b6c88c5888d6ae995e0799629aae2fb23251 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x779F | 10136 bytes |
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