MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ttraff.com/wix?keyword=ansi+z535+pdf' is likely the initial lure. Additionally, the PDF contains a large number of external links, many pointing to 'static.usrfiles.com', which is flagged as a link farm. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector suggests a phishing or malware delivery attempt.
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.com/wix?keyword=ansi+z535+pdf
- https://static.usrfiles.com/ugd/b8c837_4435acaf8f07454098913d9b1539bec5.pdf
- https://static.usrfiles.com/ugd/b8c837_39a3f44cf804498ea10c6a147c3aed1e.pdf
- https://static.usrfiles.com/ugd/b8c837_6ab20aa27e6a4540a23c7558fa6d3eb8.pdf
- https://static.usrfiles.com/ugd/b8c837_adec1b6619a34c3084a920334182f577.pdf
- https://static.usrfiles.com/ugd/b8c837_1e5e21ddac784393b810623b8b435b14.pdf
- https://static.usrfiles.com/ugd/b8c837_22cf1212154446df87a2a48f71669641.pdf
- https://static.usrfiles.com/ugd/b8c837_a81b69b956e5473c91c32c5a7c31e113.pdf
- https://static.usrfiles.com/ugd/b8c837_ed5b512593ad428f8bd4dd791542346d.pdf
- https://static.usrfiles.com/ugd/b8c837_4b2644d78f39464fa3d97d8f0891de10.pdf
- https://static.usrfiles.com/ugd/b8c837_86e99511f69c406393a8b64b56dfe739.pdf
- https://static.usrfiles.com/ugd/b8c837_4c3db10aacf14b5e8cb2cfbbe9a95f8e.pdf
- https://cdn.shopify.com/s/files/1/0433/8774/8519/files/how_to_set_up_pegaswitch.pdf
- https://cdn.shopify.com/s/files/1/0433/8938/6901/files/mavusawuwuxuzike.pdf
- https://cdn.shopify.com/s/files/1/0430/1602/8309/files/zupebemegedijewefugowu.pdf
- https://cdn.shopify.com/s/files/1/0431/5119/6315/files/79721947950.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_off00006fa9.bin7245579ade7aa50c7972203213b799332115a76a159ebcd36191af8ac863ca3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FA9 | 5024 bytes |
font_01_sfnt_off000080e1.bin9cc323730c67c7c9f45096f13a912dec2a5bd082d13d6fd021ccf4f8e88dd911 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80E1 | 10108 bytes |
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