MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a significant number of embedded links, identified as a link farm, with a critical heuristic firing for malicious redirector links. The primary malicious URL points to a redirector service, suggesting an attempt to lure users to potentially harmful content. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create documents for SEO manipulation or to disguise malicious 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/wb?keyword=fibrilacion%20auricular%20electrocardiograma%20pdf
- http://files.sequatchiecountyband.org/uploads/1/3/0/9/130969551/1708227.pdf
- http://files.100percentcajun.com/uploads/1/3/1/0/131070751/6209751.pdf
- http://files.ftpiercemasons.org/uploads/1/3/1/6/131606953/9351125.pdf
- http://files.sciencelife.org/uploads/1/3/1/6/131637953/gotimaripaw-fekapa.pdf
- http://files.cochocolatefests.com/uploads/1/3/0/9/130969772/gobizeninewoto-pitizekaze-zopolepafukamas.pdf
- http://files.sciencelife.org/uploads/1/3/
- https://cdn.shopify.com/s/files/1/0432/5569/3470/files/rururu.pdf
- https://cdn.shopify.com/s/files/1/0437/2670/0696/files/nizarepororizidofokegemup.pdf
- https://cdn.shopify.com/s/files/1/0429/9712/1178/files/vilodoponenijajozubexiz.pdf
- https://cdn.shopify.com/s/files/1/0427/4061/3286/files/92389968470.pdf
- https://cdn.shopify.com/s/files/1/0430/3699/9842/files/kutexubajakebizikenabuz.pdf
- https://cdn.shopify.com/s/files/1/0429/6101/0842/files/wepobipufaw.pdf
- https://cdn.shopify.com/s/files/1/0429/9191/1066/files/51589573874.pdf
- https://cdn.shopify.com/s/files/1/0432/0745/8975/files/43801425013.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxedisurerikemamezawapux.pdf
- https://cdn.shopify.com/s/files/1/0431/6128/8868/files/webigexeminifijev.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_off000084ab.bin2c89a767d358e30ce27e250bacc7516267d7ab4d1de07fd839fabe385882ba10 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x84AB | 5272 bytes |
font_01_sfnt_off00009673.bin09ca432cf3e87cb8e1dce47fde6fae64a61d3869dc10ff7640d4b3a6afaeb376 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9673 | 11316 bytes |
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