MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, suggesting a deliberate attempt to trick the user into clicking it. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning and driving traffic to malicious sites.
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=seronegative+spondyloarthritis+guidelines
- https://static.usrfiles.com/ugd/8e66a5_9f6bdcd831d546f0b260e32d2ad51f1a.pdf
- https://static.usrfiles.com/ugd/c81504_873c2b46969b4e85a58e4cd54c5f264b.pdf
- https://static.usrfiles.com/ugd/590778_485aa1fc50744289bd34e2ee1b09220f.pdf
- https://static.usrfiles.com/ugd/b5472a_b7f225b77a094287a32ede84f1c974d0.pdf
- https://cdn.shopify.com/s/files/1/0432/8200/6171/files/11001439155.pdf
- https://cdn.shopify.com/s/files/1/0435/8973/0472/files/24307036056.pdf
- https://cdn.shopify.com/s/files/1/0439/2163/7544/files/wepilebixapejetoz.pdf
- https://cdn.shopify.com/s/files/1/0431/1279/2221/files/standard_definition_tv.pdf
- https://static.usrfiles.com/ugd/868401_239faefd9c62414abd09ca9c6450512d.pdf
- https://static.usrfiles.com/ugd/6a7407_8ca97cce7b934d70a27175977508eede.pdf
- https://static.usrfiles.com/ugd/97634b_d3e2db78364f4c76abe30096141b16ca.pdf
- https://static.usrfiles.com/ugd/c4f63d_84330f3cb84c446fb5f1cc95f3b4bfc0.pdf
- https://static.usrfiles.com/ugd/0779a3_90575c2fa3064e23a5d78034775db9c3.pdf
- https://static.usrfiles.com/ugd/e1a791_4df576ed6f454eb6bd238e7244d59d9d.pdf
- https://static.usrfiles.com/ugd/585b1d_cb50c2fcbfb847b4b0e73f9e2e4d3164.pdf
- https://static.usrfiles.com/ugd/d1c05f_5469001d52de44ebacbb8ddcca514453.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_off00014861.bin842005cc26d7f6ed8edc5a4d652a3e678ef31f6c07635f62aeccc3c51adb88d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14861 | 5488 bytes |
font_01_sfnt_off00015b0c.bin805bf1dc967b128c6a06e09bcc805e6b7771e3723e76d14fb048f7b11ccb902e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15B0C | 12544 bytes |
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