MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link disguised as a 'Dropbox app for android' download, which points to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and the 'PDF_SEO_LINK_FARM' heuristic indicates the PDF is part of a larger network of linked documents. The ML classifier also 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/wix?keyword=dropbox+app+for+android
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://static.usrfiles.com/ugd/b8c837_ae6b6a3abb8f4e8797b7cd5b917673a0.pdf
- https://static.usrfiles.com/ugd/e5a943_70c57978501045e89914019273297c5e.pdf
- https://static.usrfiles.com/ugd/b916f4_aebd4a91dcdb42e2a1c5a833f825bf82.pdf
- https://static.usrfiles.com/ugd/bf650e_f56f68d431734558b8e59b000296b25f.pdf
- https://static.usrfiles.com/ugd/3e5d97_5cdb68cd92fd411996bcb1174035bd35.pdf
- https://static.usrfiles.com/ugd/b8c837_c4561c2183f94120b0ed500ba06b6d3c.pdf
- https://static.usrfiles.com/ugd/a771bd_0766fab3801b42e7b76811d1a8ded30c.pdf
- https://static.usrfiles.com/ugd/b8c837_2e885859f7b641b4974a6b34ad3db0f0.pdf
- https://static.usrfiles.com/ugd/97634b_408717eaf0064c4080f7cd6dd9e314ed.pdf
- https://cdn.shopify.com/s/files/1/0430/9614/6073/files/48524711319.pdf
- https://cdn.shopify.com/s/files/1/0431/6584/3620/files/pububerinobunirufakag.pdf
- https://cdn.shopify.com/s/files/1/0435/9618/5763/files/9969331041.pdf
- https://cdn.shopify.com/s/files/1/0463/2500/6491/files/gegazigugapipikeguge.pdf
- https://cdn.shopify.com/s/files/1/0434/2457/9751/files/first_angle_projection_symbol_solidworks.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000074e6.bin7bd4d89b2391b6148dad49dccb2645e49c6e5980fb7a6e4920b474f797c93961 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74E6 | 4620 bytes |
font_01_sfnt_off00008494.binb0f924a0e9b06c91fa8495d3adfb92301db7ec08e1b073c64024f142af8dc538 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8494 | 10444 bytes |
font_02_sfnt_off0000a82e.bind1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA82E | 4324 bytes |
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