MALICIOUS
154
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 points to a known malicious redirector at `ttraff.ru`. The document body, though heavily obfuscated, contains the URL and appears to be a lure related to 'ntpmex atualizada 2018 pdf'. The presence of numerous links to external PDFs, 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=ntpmex%20atualizada%202018%20pdf
- http://files.pennysmithrealty.com/uploads/1/3/1/0/131070452/waxularekeluletu.pdf
- http://files.cocodancewear.com/uploads/1/3/1/1/131164472/xorexobovisoki-vufozebiwu.pdf
- https://cdn.shopify.com/s/files/1/0432/7197/9172/files/kudajubuvufobe.pdf
- https://cdn.shopify.com/s/files/1/0428/9232/9119/files/99480745547.pdf
- https://cdn.shopify.com/s/files/1/0430/0318/3258/files/car_research_xrm.pdf
- https://cdn.shopify.com/s/files/1/0437/3502/3770/files/selatexilimal.pdf
- https://cdn.shopify.com/s/files/1/0433/0710/6462/files/tavazotakekivekokonuval.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdf
- https://cdn.shopify.com/s/files/1/0429/0763/1779/files/90484889014.pdf
- https://cdn.shopify.com/s/files/1/0434/6806/2872/files/29606446136.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
- https://cdn.shopify.com/s/files/1/0430/4830/4797/files/lekesalegegazetuw.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_off0000a16a.binf8550ce3bf66d75ab4914f467973f22cfb79ae61b0306bcb675bc70a8151e15f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA16A | 5520 bytes |
font_01_sfnt_off0000b435.bin149cb0f7941754f34da139f9d1ab99deb33efb0ab61a09a00549bd57703434f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB435 | 10192 bytes |
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