MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'static.usrfiles.com'. The document body, though partially corrupted, contains text related to linear transformations and a URL that appears to be the same as the malicious redirector. This suggests a social engineering attempt to drive traffic to malicious infrastructure.
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=aplicaciones+de+transformaciones+lineales+a+cualquier+campo+de+ingenier%25C3%25ADa
- https://static.usrfiles.com/ugd/b8c837_91d29f0c93c547c0a93f18a9c21689ae.pdf
- https://static.usrfiles.com/ugd/06497e_a007ed1ddeac48c290ccae11ca99d374.pdf
- https://static.usrfiles.com/ugd/b8c837_05d5040985d642f49455785083da860d.pdf
- https://static.usrfiles.com/ugd/72b0e7_fd3700a966524897959ba0bda2404b2c.pdf
- https://static.usrfiles.com/ugd/b8c837_219904eb461341b78c0d4031c6bdbdb9.pdf
- https://cdn.shopify.com/s/files/1/0428/5949/5590/files/muvuxivunag.pdf
- https://cdn.shopify.com/s/files/1/0434/8664/2338/files/79183882265.pdf
- https://static.usrfiles.com/ugd/b8c837_e5d8e7434cde4aca898148b5cf1aa115.pdf
- https://static.usrfiles.com/ugd/23e9be_308575b1208d444f9e9764d28c489104.pdf
- https://static.usrfiles.com/ugd/b8c837_48dfbe299e9a4f2b8cf9536bfa38540c.pdf
- https://static.usrfiles.com/ugd/a6e5e9_03297fd3feeb4f9d8c66e6d393652f66.pdf
- https://static.usrfiles.com/ugd/aff7ca_c7d990f629b7474797352a44fa797b9b.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_off00008044.bin2f50b38b195f57ff1a90f5d953d6c9d2749cf8fb43c92c5edc78ece1cc7e8e37 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8044 | 5644 bytes |
font_01_sfnt_off00009353.bindddc0568735130b64ddfaf7cfcadacb1822f57661c6f3ac62608cb87c6295f01 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9353 | 17000 bytes |
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