MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that point to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=%25C4%2591%25E1%25BB%2581+thi+tr%25E1%25BA%25AFc+nghi%25E1%25BB%2587m+m%25C3%25B4n+thanh+to%25C3%25A1n+qu`. The document body, though heavily obfuscated, contains fragments that suggest a lure related to "payment" or "examination". The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used to distribute malicious content. 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/pify?keyword=%25C4%2591%25E1%25BB%2581+thi+tr%25E1%25BA%25AFc+nghi%25E1%25BB%2587m+m%25C3%25B4n+thanh+to%25C3%25A1n+qu
- http://files.rovdownunder.com/uploads/1/3/1/0/131070356/9272476.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/1798/4405/files/xubuzaxokorodamejizo.pdf
- https://cdn.shopify.com/s/files/1/0428/1883/0492/files/vafoletujigadejebodevamej.pdf
- https://cdn.shopify.com/s/files/1/0432/6529/4504/files/mudabuwefumolimizajo.pdf
- https://cdn.shopify.com/s/files/1/0437/0972/6874/files/givolesigagakit.pdf
- https://cdn.shopify.com/s/files/1/0434/3519/6578/files/guide_rock_ne_post_office.pdf
- https://cdn.shopify.com/s/files/1/0434/4096/3751/files/wuxemadoxon.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7641/files/paruwedemaxaxot.pdf
- https://cdn.shopify.com/s/files/1/0434/6393/4105/files/72636962684.pdf
- https://cdn.shopify.com/s/files/1/0429/3319/0823/files/most_improved_award_certificate.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000a488.bin48c7565d514df6907bf22277ecf84a47cfd55e8356e1da71da98801c0aac94d9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA488 | 6148 bytes |
font_01_sfnt_off0000b749.bin4ea42c0cb7c478cccdeca39ec84e02f5ce96919a4435bab9ac3fc00c949bf476 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB749 | 22908 bytes |
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