MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, with one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=nitrogen+fixation+notes+pdf`. The document body, though heavily obfuscated, also contains this URL and other Shopify URLs, suggesting a link farm or SEO poisoning tactic to distribute malicious PDFs. The ML classifier strongly flagged this PDF as malicious.
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=nitrogen+fixation+notes+pdf
- http://files.alexandroquerevalu.eu/uploads/1/3/1/6/131636828/nivam_gerizukunami_gozuwakivok.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0427/4677/3660/files/wudikuxepubixafigag.pdf
- https://cdn.shopify.com/s/files/1/0432/5107/3174/files/free_song_careless_whisper_george_michael.pdf
- https://cdn.shopify.com/s/files/1/0434/6717/8134/files/git_sub_repository.pdf
- https://cdn.shopify.com/s/files/1/0428/0070/9791/files/fodozusaduwesamevixamemep.pdf
- https://cdn.shopify.com/s/files/1/0429/1959/2099/files/physical_science_grade_11_text_book.pdf
- https://cdn.shopify.com/s/files/1/0436/9815/9784/files/1451067798.pdf
- https://cdn.shopify.com/s/files/1/0439/0453/2648/files/71471785931.pdf
- https://cdn.shopify.com/s/files/1/0435/3989/0327/files/wagalidig.pdf
- https://cdn.shopify.com/s/files/1/0428/9875/1641/files/porque_el_alcoholismo_es_un_problema_social.pdf
- https://cdn.shopify.com/s/files/1/0436/5756/0217/files/baadshaho_movie_hd_online.pdf
- https://cdn.shopify.com/s/files/1/0437/7736/0029/files/ziwuwugovowagajakekeg.pdf
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/51862040098.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_off00005be3.bin8ac6467b53db18e3f8462f7ce00cd7e0d56e6813cdf7dd9158be45a237bbab81 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5BE3 | 5216 bytes |
font_01_sfnt_off00006db6.bin9d3f90b7a8e8454f20ab02983cfb8f09a5138b0802262c57660c3f970c312918 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6DB6 | 9848 bytes |
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