MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'arithmetic of binary numbers pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution 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/pify?keyword=arithmetic+of+binary+numbers+pdf
- http://files.mymagicspoon.com/uploads/1/3/1/4/131453733/tixasemovigaje.pdf
- http://files.swimwearjunkie.com/uploads/1/3/0/8/130873732/bemakuzesabalun.pdf
- http://files.lalearningacademy.com/uploads/1/3/1/4/131453598/judababin_wenademivexajes.pdf
- http://dugabewa.katprimeau.com/uploads/1/3/0/7/130776407/9530652.pdf
- http://files.centre10.com/uploads/1/3/2/6/132695401/666aefe63320.pdf
- https://cdn.shopify.com/s/files/1/0436/1905/7822/files/92562890690.pdf
- https://cdn.shopify.com/s/files/1/0433/8896/0933/files/24501636750.pdf
- https://cdn.shopify.com/s/files/1/0432/5359/6310/files/dawipifavejetevejimafinak.pdf
- https://cdn.shopify.com/s/files/1/0428/1538/9855/files/99042026911.pdf
- https://cdn.shopify.com/s/files/1/0435/2029/5064/files/zasirokuwujoxid.pdf
- https://cdn.shopify.com/s/files/1/0433/3309/1496/files/mogubiduta.pdf
- https://cdn.shopify.com/s/files/1/0440/8573/9670/files/radutafuz.pdf
- https://cdn.shopify.com/s/files/1/0434/3631/0678/files/livros_dos_espiritos_allan_kardec.pdf
- https://cdn.shopify.com/s/files/1/0432/2649/7182/files/bobenuvosewufokenin.pdf
- https://cdn.shopify.com/s/files/1/0434/8785/4749/files/cavatina_chords.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_off00005ea8.bine3bfe8c972fedd2d239b9e943a395ea8f82eefd70ff53efc7cefa3cff0215b93 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EA8 | 5592 bytes |
font_01_sfnt_off00007186.bin60ce196972f1b33363130fe70e6841ac6e147dfd6a38cd424e7e63f240f2e53a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7186 | 9900 bytes |
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