MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was identified as malicious by an ML classifier and contains a link farm with 12 external PDF links. One of these links, https://ttraff.ru/wix?keyword=thk+3d+cad+models, points to known malicious redirector infrastructure. The document body contains garbled text and the authoring application is wkhtmltopdf, suggesting it was programmatically generated to host these links.
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/wix?keyword=thk+3d+cad+models
- https://static.usrfiles.com/ugd/1decf9_55cec78d71124505a7dd8260f8c76fe5.pdf
- https://static.usrfiles.com/ugd/0f5b72_59294b4d13fb4789892affb199d54e3f.pdf
- https://static.usrfiles.com/ugd/544c7e_dc0dfcf2b9744ba0b0c1835b5e0ce01f.pdf
- https://cdn.shopify.com/s/files/1/0434/2461/2509/files/youtube_topic_music.pdf
- https://cdn.shopify.com/s/files/1/0459/2805/4951/files/cretsiz_aptoide_indir_apk.pdf
- https://cdn.shopify.com/s/files/1/0432/7669/7760/files/iata_city_code_list.pdf
- https://cdn.shopify.com/s/files/1/0432/8180/9563/files/chicago_bears_colors_paint.pdf
- https://cdn.shopify.com/s/files/1/0430/2965/9805/files/nisenifepuda.pdf
- https://cdn.shopify.com/s/files/1/0468/8130/8829/files/sucursais_de_santaniana.pdf
- https://cdn.shopify.com/s/files/1/0462/2142/6841/files/zugifidun.pdf
- https://cdn.shopify.com/s/files/1/0440/3891/4213/files/85153135743.pdf
- https://cdn.shopify.com/s/files/1/0432/3383/7224/files/bissell_powersteamer_powerbrush_manual.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_off00003d91.bin1395f22e162f03da93caec876ee03491038942a4a1039021918875b5c880986b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3D91 | 5260 bytes |
font_01_sfnt_off00004f4b.bin55c84ff7a15c7de062da12e9620155373bc449d1721df90f0585dc8539c2a5c4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4F4B | 9608 bytes |
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