MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'maths olympiad class 4 worksheets' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content or redirect users.
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/wb?keyword=maths%20olympiad%20class%204%20worksheets
- http://files.thecapacitygroup.org/uploads/1/3/1/8/131856547/batotaxu.pdf
- https://cdn.shopify.com/s/files/1/0434/5567/6568/files/67087520312.pdf
- https://cdn.shopify.com/s/files/1/0438/0449/1938/files/canada_food_guide_bacon_serving_size.pdf
- https://cdn.shopify.com/s/files/1/0431/3061/8011/files/84237762426.pdf
- https://cdn.shopify.com/s/files/1/0435/2521/0276/files/anatole_klyosov.pdf
- https://cdn.shopify.com/s/files/1/0428/1332/5471/files/21227027565.pdf
- https://cdn.shopify.com/s/files/1/0434/7330/5750/files/11737201457.pdf
- https://cdn.shopify.com/s/files/1/0431/8589/7627/files/wavabemojim.pdf
- https://cdn.shopify.com/s/files/1/0429/4003/9324/files/figamepisaguvapeji.pdf
- https://cdn.shopify.com/s/files/1/0434/3808/0166/files/65681977040.pdf
- https://cdn.shopify.com/s/files/1/0428/9688/3868/files/6592716238.pdf
- https://cdn.shopify.com/s/files/1/0436/5382/4677/files/80525355331.pdf
- https://cdn.shopify.com/s/files/1/0431/1410/2941/files/zawexifej.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34007074416.pdf
- https://cdn.shopify.com/s/files/1/0439/8533/8526/files/pdf_bm_spm.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_off00004574.binb3f57c760c79a54faf4b22d622363fa5cb1a54416b036e0959e4493357484f06 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4574 | 5664 bytes |
font_01_sfnt_off000058b5.bin1d17f891719d0381be38e35084941ae9e41153d6df844e83ab4ea88b44bfa92e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58B5 | 9960 bytes |
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