MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass external link farm, with multiple URLs pointing to static.usrfiles.com, and a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/wix?keyword=law+for+business+12th+edition, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains text related to 'law for business' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier also 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.ru/wix?keyword=law+for+business+12th+edition
- https://static.usrfiles.com/ugd/ade4e6_ca3590ddfad64488a6ef1c5960435ca5.pdf
- https://static.usrfiles.com/ugd/a298ce_ea1445e6cfcf4ffeb51c2d208fde2534.pdf
- https://static.usrfiles.com/ugd/b8c837_3e23a41186604fdda221f1467e8a191e.pdf
- https://static.usrfiles.com/ugd/63022f_3a10c8f206f64652ad1a4c55e924c9af.pdf
- https://static.usrfiles.com/ugd/79e5df_f316a58a5f4f40ca9956332e29356c8f.pdf
- https://static.usrfiles.com/ugd/b8c837_506f562396bf4f09bcbc7d1bd30129cd.pdf
- https://static.usrfiles.com/ugd/913720_caa46e6da19e4048b94064861b30900d.pdf
- https://static.usrfiles.com/ugd/b13fd1_37fd25db81594a36a584f2f73cef272d.pdf
- https://static.usrfiles.com/ugd/b8c837_7877b9763f2e40b19743e642d20e898c.pdf
- https://cdn.shopify.com/s/files/1/0428/8276/0870/files/gazesirusokevimuxupidiz.pdf
- https://cdn.shopify.com/s/files/1/0436/9973/2635/files/rokunawavosozonafigun.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_off00004abd.bina2ecf76f17abded45765de66d8e26bde8a7548e59973003e76f3eb662edbb3d9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4ABD | 5320 bytes |
font_01_sfnt_off00005ce8.bin4ccb82fdacb1e75eaebe02767398b112526af038ad9537847846651c6e0457d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5CE8 | 14212 bytes |
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