MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, including one that redirects to malicious infrastructure, disguised as a download for an English grammar book. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to a known malicious redirector. The document body itself is heavily obfuscated but contains the primary malicious URL.
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/pify?keyword=a+practical+english+grammar+exercises+4th+edition+pdf
- http://judabiver.indiansinwinnipeg.com/uploads/1/3/2/6/132681352/7617d57d3b74.pdf
- http://files.theresearchmonster.com/uploads/1/3/0/8/130814588/devolube.pdf
- http://files.goaskalex.org/uploads/1/3/1/3/131381109/vurega_parumusuleda_kaxaxujatiw_fuzuwudesef.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/3308/4575/files/jotabipazu.pdf
- https://cdn.shopify.com/s/files/1/0429/2214/8003/files/2625297800.pdf
- https://cdn.shopify.com/s/files/1/0437/6389/2375/files/awards_2020_19.pdf
- https://cdn.shopify.com/s/files/1/0437/5203/0357/files/lojajekumixif.pdf
- https://cdn.shopify.com/s/files/1/0434/4040/6684/files/wunadamimiwesavakov.pdf
- https://cdn.shopify.com/s/files/1/0437/7464/0286/files/14479068499.pdf
- https://cdn.shopify.com/s/files/1/0449/2853/2635/files/basics_of_economics_for_upsc.pdf
- https://cdn.shopify.com/s/files/1/0432/6568/7717/files/75515191839.pdf
- https://cdn.shopify.com/s/files/1/0432/6119/8491/files/20140646695.pdf
- https://cdn.shopify.com/s/files/1/0430/8018/8058/files/22706946281.pdf
- https://cdn.shopify.com/s/files/1/0432/6775/2099/files/7733188816.pdf
- https://cdn.shopify.com/s/files/1/0431/2272/0922/files/carcassonne_board_game_rules.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_off00004d8a.bin8c9791a5ea0b2b92344627fc4cc919bc68bbd1a069b5a5c45322ec0de6a913b0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4D8A | 5712 bytes |
font_01_sfnt_off000060dc.bin99893643c23df8209a6330bf2e5f71be2e52bd655dab7d5ef655ccf7215de515 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x60DC | 9868 bytes |
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