MALICIOUS
162
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a known malicious redirector, disguised as a download button. The document body, though heavily obfuscated, contains text related to 'Lexis audio editor pro apk for android' and a URL that appears to be part of a link farm. The presence of embedded URLs and the ML classifier strongly indicate malicious intent, likely to deliver a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/wix?keyword=lexis+audio+editor+pro+apk+for+android
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/cc03df_9920c2564fa54769a1d5809e3a414fc4.pdf
- https://static.usrfiles.com/ugd/b8c837_331ad7e87edc4c14a3869fe8a9245b56.pdf
- https://static.usrfiles.com/ugd/45e30f_5970f12dbcd94a1791749331dae4309e.pdf
- https://cdn.shopify.com/s/files/1/0429/2666/9987/files/varulopanuxirar.pdf
- https://cdn.shopify.com/s/files/1/0432/6454/0835/files/86330553229.pdf
- https://static.usrfiles.com/ugd/9219f8_d2aba09315254326a4542d116cbe7e25.pdf
- https://static.usrfiles.com/ugd/1df9ea_9b694fca0a8245baa91bb7609ead81c8.pdf
- https://static.usrfiles.com/ugd/79cb75_c66358bcefa24b49b89da5b044fbd323.pdf
- https://static.usrfiles.com/ugd/0779a3_1c512302b00f4ce189e6634b6c250f7c.pdf
- https://static.usrfiles.com/ugd/b8c837_3f66f03741b147d385a27749e24f2d19.pdf
- https://static.usrfiles.com/ugd/9d66c7_840dac9c3ac8498f962a505097ae54fd.pdf
- https://static.usrfiles.com/ugd/b8c837_39835e4bb17e4edfab816511a3ef0091.pdf
- https://static.usrfiles.com/ugd/79e5df_6fc5b8b59b0d45258ad8a49f5edbb7c6.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_off00005397.bin7f4a8ae20c2c07578c4b567cd8b7da6633e01bfad56bf2f37c1253bb46ade5cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5397 | 5076 bytes |
font_01_sfnt_off000064f9.bin9e81cb13840989f13b823bee95b9e61a5ce02f73c187f21b4790555d0026f448 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64F9 | 10288 bytes |
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