MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a significant number of embedded URLs, many of which point to external PDF files, suggesting a link farm or SEO poisoning attempt. One of these URLs, 'https://ttraff.cc/wix?keyword=d+i+v%25E1%25BB%258B+tr%25C3%25AD+n%25E1%25BA%25B1m+s%25E1%25BB%2591+khung+xe+attila+el', is identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body itself appears to be obfuscated or contains non-standard characters, but the presence of the malicious redirector is a high-confidence indicator of malicious intent.
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.cc/wix?keyword=d+i+v%25E1%25BB%258B+tr%25C3%25AD+n%25E1%25BA%25B1m+s%25E1%25BB%2591+khung+xe+attila+el
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/2482/6014/files/kaseletanog.pdf
- https://cdn.shopify.com/s/files/1/0431/2412/9952/files/lotufurerugojokig.pdf
- https://cdn.shopify.com/s/files/1/0431/3877/7249/files/57104979099.pdf
- https://cdn.shopify.com/s/files/1/0431/8022/8757/files/60295958953.pdf
- https://static.usrfiles.com/ugd/b8c837_17c8f6c4e40b4f0fa3f29c9311347c6c.pdf
- https://static.usrfiles.com/ugd/d5415a_795e802b8dee4696bc58a309b6753c78.pdf
- https://static.usrfiles.com/ugd/5ecadc_5aa2b8b25540447b943c0226c5a6535e.pdf
- https://cdn.shopify.com/s/files/1/0437/3518/7605/files/zidubejotefobofevinezutoj.pdf
- https://cdn.shopify.com/s/files/1/0435/1482/2808/files/db_realty_annual_report_2016.pdf
- https://static.usrfiles.com/ugd/fac845_677d9a6129b24491ae0113b4998911e4.pdf
- https://static.usrfiles.com/ugd/735189_d927f098452841c98d60674dcfcafed8.pdf
- https://static.usrfiles.com/ugd/b8c837_de1f308bf5e34aafbe3b8548f13ecdf3.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_off00005dba.bin7b3bd089b84e0f095f3658c4f15031ab45d3e59dc081cb5fa9f96029b9b375b5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DBA | 5856 bytes |
font_01_sfnt_off000070ac.bin801359e942131d7c1cfbf69b19a34c5bda2e69b79fd0937381cf7052b35fd4d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70AC | 21808 bytes |
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