MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, with one specifically pointing to a malicious redirector. The document body text, though garbled, includes keywords related to a chess puzzle book and the malicious URL, suggesting a lure for SEO spam or phishing. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link indicates a high likelihood of malicious intent.
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=the+ultimate+chess+puzzle+book+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/1887/8114/files/xovidanokuf.pdf
- https://cdn.shopify.com/s/files/1/0458/3289/6675/files/vavur.pdf
- https://cdn.shopify.com/s/files/1/0432/7574/7483/files/1223881582.pdf
- https://static.usrfiles.com/ugd/24deb6_9ac3ad1a592541488d6836dee66179a4.pdf
- https://static.usrfiles.com/ugd/cc089a_b5b8b73d60264b88b00f9619dfcc69f2.pdf
- https://static.usrfiles.com/ugd/253000_d9413b381cb54329ba36fb5e7e322f33.pdf
- https://static.usrfiles.com/ugd/2c608b_9c580d2496234658a61230b7c1f4bc35.pdf
- https://cdn.shopify.com/s/files/1/0430/9162/4096/files/35857068141.pdf
- https://cdn.shopify.com/s/files/1/0430/4509/3533/files/35333955240.pdf
- https://cdn.shopify.com/s/files/1/0434/5161/3336/files/95583535134.pdf
- https://static.usrfiles.com/ugd/3b0c81_d4e1679fc0af4eec8409dc003e116e3c.pdf
- https://static.usrfiles.com/ugd/13ae68_e99ccfd02a6f41009226f3f312e6ed24.pdf
- https://static.usrfiles.com/ugd/2ac701_8756d4fd4c4d434db492701eeee47b96.pdf
- https://static.usrfiles.com/ugd/3cb679_5819a6b49ffc4daaba54738d5fb3515d.pdf
- https://static.usrfiles.com/ugd/756799_47adfde505c346b19cdb0063bf2f9a3f.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000050c7.bin40c35cb92dff7298169d98f49595a4083baa6584f6a5f82181a2fe394bc67edd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x50C7 | 5504 bytes |
font_01_sfnt_off0000635b.bine53282809a38389696cbc624c9e47ffc9734997d7d3c44ac2ea1cd0855ea9199 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x635B | 14312 bytes |
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