MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a malicious redirector link that leads to a large collection of other PDF files, likely intended to host malicious content or facilitate further infection. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms a high likelihood of malicious intent. No scripts were extracted, and the document body is heavily obfuscated.
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.cc/wb?keyword=solving%20equations%20with%20variables%20on%20both%20sides%20worksheet%202-4
- http://files.tangerinetales.com/uploads/1/3/1/4/131438068/6517519.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0436/0817/8850/files/lodish_molecular_cell_biology_7th_edition.pdf
- https://cdn.shopify.com/s/files/1/0431/8711/0037/files/jerekusufaxodizazoven.pdf
- https://cdn.shopify.com/s/files/1/0438/9430/9019/files/free_printable_column_paper.pdf
- https://cdn.shopify.com/s/files/1/0434/2897/0647/files/diregajo.pdf
- https://cdn.shopify.com/s/files/1/0437/9879/0301/files/44874894559.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/suton.pdf
- https://cdn.shopify.com/s/files/1/0431/6394/3067/files/jizujosonafirukux.pdf
- https://cdn.shopify.com/s/files/1/0432/4353/6541/files/introduction_to_geotechnical_engineering_2nd_edition.pdf
- https://cdn.shopify.com/s/files/1/0432/7292/9435/files/risufedunagage.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_off00005580.bin67dd99ce04d29e09dacea5173c25c403f5ed93a545361baf87c0a425390b3b8b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5580 | 5924 bytes |
font_01_sfnt_off000069b5.bin454ce066308df87060daf088aec8b3245eec42cd4ce511105de644408190e6c4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69B5 | 10120 bytes |
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