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, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'diagnostic spelling assessment pdf'. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm designed to obscure the true malicious destination. No scripts were extracted, but the ML classifier strongly indicates 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/pify?keyword=diagnostic+spelling+assessment+pdf
- http://files.antoniagoodfellow.com/uploads/1/3/0/8/130874567/410355.pdf
- http://kowituk.reedcooper.net/uploads/1/3/1/0/131070718/dosekeweladajopu.pdf
- http://files.ffylloniaid.com/uploads/1/3/2/6/132695714/wogunepu_pexoxegovupidab.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/0349/4043/files/keveliwananuboximif.pdf
- https://cdn.shopify.com/s/files/1/0434/4155/3575/files/7508585817.pdf
- https://cdn.shopify.com/s/files/1/0430/6537/6919/files/tipos_de_antiacidos.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7641/files/dananumax.pdf
- https://cdn.shopify.com/s/files/1/0438/0390/2112/files/noreti.pdf
- https://cdn.shopify.com/s/files/1/0431/2717/7380/files/80531350048.pdf
- https://cdn.shopify.com/s/files/1/0431/0872/8993/files/64013106493.pdf
- https://cdn.shopify.com/s/files/1/0432/7673/0533/files/simplex_2001_manual.pdf
- https://cdn.shopify.com/s/files/1/0434/2906/8949/files/62121904384.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_off00006a9e.bin84b43025e5ebcaac010597d8c2319946ddfe3286c02134e8b972ba8b83519c0f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A9E | 5376 bytes |
font_01_sfnt_off00007ce1.bin667f3ffcce96bb45f82d95d176c33c17cc1b6d5d9e086185c423d88ca6557151 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CE1 | 10160 bytes |
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