MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains embedded links, with one pointing to a known malicious redirector at 'https://ttraff.ru/wb?keyword=text%20to%20pdf%20converter%20app'. The document body, though heavily obfuscated, also contains references to 'text to pdf converter app' and URLs, reinforcing the lure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. 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/wb?keyword=text%20to%20pdf%20converter%20app
- http://files.envirolaser.com/uploads/1/3/0/8/130814515/susok.pdf
- https://cdn.shopify.com/s/files/1/0428/8705/3471/files/70685939584.pdf
- https://cdn.shopify.com/s/files/1/0429/8270/3257/files/dotidotesoxuvoxom.pdf
- https://cdn.shopify.com/s/files/1/0434/8238/2502/files/37099994268.pdf
- https://cdn.shopify.com/s/files/1/0432/9085/3534/files/borges_book_of_imaginary_beings.pdf
- https://cdn.shopify.com/s/files/1/0433/6150/1336/files/tofoduguvolojigamizelijo.pdf
- https://cdn.shopify.com/s/files/1/0432/3885/0728/files/25495482881.pdf
- https://cdn.shopify.com/s/files/1/0448/1702/3138/files/carmina_burana_orchestral_parts.pdf
- https://cdn.shopify.com/s/files/1/0427/9032/2342/files/agile_project_management_download.pdf
- https://cdn.shopify.com/s/files/1/0429/2640/7833/files/organic_chemistry_wade_8th_edition_download.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_off00006efe.bin26681f1a12ed3d23752ded16226c7dfe555fa68b305b6695bfbd18efaafeffeb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6EFE | 5016 bytes |
font_01_sfnt_off00008029.binb57bd4af2abbd87b6775f43eb8e6a44c51584ffd826ecb293f9878316283159f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8029 | 12552 bytes |
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