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, one of which, 'https://ttraff.ru/wix?keyword=mtb+step+3+pdf+download', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to 'Mtb step 3 pdf download'. The presence of a mass external PDF link farm further supports a malicious intent to redirect users to potentially harmful content.
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=mtb+step+3+pdf+download
- https://static.usrfiles.com/ugd/b8c837_f38d507272ba4bb5ac3f24534b1883b7.pdf
- https://static.usrfiles.com/ugd/3aee12_e06d8c66b8114314893d5977d6630f6b.pdf
- https://static.usrfiles.com/ugd/735189_6ac35cf5e63c43528a43cc1db51b1cd8.pdf
- https://static.usrfiles.com/ugd/74c34a_7a4bed70b0594d15a0b24c2ab7c27c95.pdf
- https://cdn.shopify.com/s/files/1/0432/4786/1928/files/lugajobepipekur.pdf
- https://cdn.shopify.com/s/files/1/0433/3830/1590/files/xejebajabarelebeti.pdf
- https://cdn.shopify.com/s/files/1/0438/2621/7120/files/pdf_tools_4._0.pdf
- https://cdn.shopify.com/s/files/1/0434/1451/9966/files/34774554554.pdf
- https://cdn.shopify.com/s/files/1/0432/8128/5286/files/gudokibezazarebarivoke.pdf
- https://cdn.shopify.com/s/files/1/0428/5405/6092/files/wofunugi.pdf
- https://cdn.shopify.com/s/files/1/0438/9168/7579/files/checkpoint_endpoint_security_vpn_mac.pdf
- https://cdn.shopify.com/s/files/1/0430/0649/2823/files/39969952153.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_off000061a6.bin1fba206a99c5fe7eb158f84aa3331ae990431128e6727b33a7836f9f17a1b93f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61A6 | 5340 bytes |
font_01_sfnt_off000073fa.bin262fd1bfa6e08bc37a3f5cb499033902f94c8bd4684a854b407bd0137c261dd0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73FA | 15752 bytes |
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