MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though obfuscated, contains a URL pointing to the same malicious redirector. This suggests the primary intent is to lure the user into clicking the link, leading to a malicious site. The ML classifier strongly supports the malicious nature of this PDF.
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=endothermic%20and%20exothermic%20reaction%20notes%20worksheet
- http://bejedifi.toolstorm.ca/uploads/1/3/0/7/130739297/8979404.pdf
- http://vuzuv.jamaicanamericanbar.com/uploads/1/3/1/4/131408024/3062673.pdf
- http://files.body-knowledge.com/uploads/1/3/2/6/132681824/2094315.pdf
- http://files.cavallindesign.com/uploads/1/3/1/4/131407102/4e021d.pdf
- https://cdn.shopify.com/s/files/1/0435/8999/2605/files/how_to_check_cudnn_version.pdf
- https://cdn.shopify.com/s/files/1/0430/5630/0186/files/12323315624.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdf
- https://cdn.shopify.com/s/files/1/0432/0903/1840/files/wifokazunuzazuna.pdf
- https://cdn.shopify.com/s/files/1/0435/6974/1983/files/54693679040.pdf
- https://cdn.shopify.com/s/files/1/0448/0742/2109/files/9th_grade_biology_book_online.pdf
- https://cdn.shopify.com/s/files/1/0434/4345/4102/files/manual_boss_me_80_portugues.pdf
- https://cdn.shopify.com/s/files/1/0432/5313/7576/files/vibarixewigupi.pdf
- https://cdn.shopify.com/s/files/1/0429/4053/0854/files/malekemuturepugawanu.pdf
- https://cdn.shopify.com/s/files/1/0438/0252/5856/files/xiranojafoxor.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_off00005959.bin959f99783356be34857f16b9a6cd5fa3bb07acf12dfc7fc8ca32142ac2134716 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5959 | 5328 bytes |
font_01_sfnt_off00006b59.binecac55fc5d7b57b03a000efe5c2ba51d84680ffc4118001e8ff9e301771011a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B59 | 10920 bytes |
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