MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a chemistry worksheet. This indicates a phishing or malware distribution attempt. The document also contains a large number of links to benign Shopify-hosted PDFs, likely part of a link farm to improve search engine ranking for the malicious URL. No scripts were extracted, but the presence of malicious links is sufficient evidence 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.ru/wix?keyword=chemistry+unit+1+worksheet+3
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/2348/3548/files/9066849563.pdf
- https://cdn.shopify.com/s/files/1/0435/6112/4008/files/xurol.pdf
- https://cdn.shopify.com/s/files/1/0440/2728/1558/files/muregum.pdf
- https://cdn.shopify.com/s/files/1/0434/5597/1480/files/29501815229.pdf
- https://cdn.shopify.com/s/files/1/0432/9291/7924/files/antagonistas_de_la_aldosterona_mecanismo_de_accion.pdf
- https://cdn.shopify.com/s/files/1/0431/7567/4012/files/17294982012.pdf
- https://cdn.shopify.com/s/files/1/0435/8517/5713/files/jezupogoduju.pdf
- https://cdn.shopify.com/s/files/1/0429/8987/9445/files/lenamekudeza.pdf
- https://cdn.shopify.com/s/files/1/0437/9266/2688/files/posejopapome.pdf
- https://static.usrfiles.com/ugd/0d089b_989f729c20bb4146bc1e7c4dc4dc9d6a.pdf
- https://static.usrfiles.com/ugd/b8c837_4d2c3bb36f12404e811aa3ac48835d09.pdf
- https://static.usrfiles.com/ugd/b8c837_76bac145d3f942f5895190352fac18c3.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_off00006131.binf0ff7acd314943df681bff9b56c8eba6a6a7e48d22a9a416695e712ed0316f0a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6131 | 5064 bytes |
font_01_sfnt_off00007268.bin28906758336d75d6b729121f97805cc2ce3248ee2bfd4fd28fe3acaa3f413711 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7268 | 10636 bytes |
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