MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL that is also present in the critical heuristic firing, suggesting a lure to download further 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/pify?keyword=curso+barras+de+access+pdf
- http://jajix.zalc.org/uploads/1/3/2/7/132741334/merevi.pdf
- http://files.umichfishing.com/uploads/1/3/1/4/131406248/kikiduropelenipexojo.pdf
- http://files.byhisgracehymns.com/uploads/1/3/0/7/130775677/127595ce71bb1.pdf
- https://cdn.shopify.com/s/files/1/0431/0047/1456/files/kikozuda.pdf
- https://cdn.shopify.com/s/files/1/0433/1290/6405/files/65813483792.pdf
- https://cdn.shopify.com/s/files/1/0427/6187/9719/files/jetaperuxefexured.pdf
- https://cdn.shopify.com/s/files/1/0430/9811/2167/files/wopeboxatavoj.pdf
- https://cdn.shopify.com/s/files/1/0433/5462/0059/files/wais_iv_manual.pdf
- https://cdn.shopify.com/s/files/1/0432/6844/0224/files/vogimasuwovepudujebamuk.pdf
- https://cdn.shopify.com/s/files/1/0439/1505/1163/files/45690613762.pdf
- https://cdn.shopify.com/s/files/1/0430/9454/0452/files/loderimupup.pdf
- https://cdn.shopify.com/s/files/1/0431/5696/3479/files/45062133469.pdf
- https://cdn.shopify.com/s/files/1/0431/2766/8890/files/bocconia_frutescens.pdf
- https://cdn.shopify.com/s/files/1/0435/9330/2178/files/91248285608.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_off00006544.bincf571b539102bb25f00ef174554f0f05abc9d153f85dc2207f2c2b4dfddab9a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6544 | 5160 bytes |
font_01_sfnt_off000076d6.binfc39558efa11bac5a2ba72a4d5d1129924b934d3cda69cc77d90f31ac15c276c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76D6 | 10976 bytes |
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