MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a link farm designed to distribute malicious content. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.ru', which is used in conjunction with keywords suggesting educational material to lure victims. The ML classifier also strongly indicated maliciousness.
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=addition+and+subtraction+of+fractions+with+different+denominators+pdf
- http://files.ashma.studio/uploads/1/3/1/1/131163718/wepenovunaroj.pdf
- http://files.godsvineyardchurch-london.org/uploads/1/3/1/1/131163898/jijebuxeradirok.pdf
- http://files.newnurse-academy.com/uploads/1/3/0/7/130776790/vuwanakege.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/2702/1480/files/jilidozebosodajovebuf.pdf
- https://cdn.shopify.com/s/files/1/0431/1128/4893/files/45247150379.pdf
- https://cdn.shopify.com/s/files/1/0438/9090/1144/files/mibumel.pdf
- https://cdn.shopify.com/s/files/1/0432/0778/6654/files/rikagakunitozutelugewo.pdf
- https://cdn.shopify.com/s/files/1/0434/3624/5142/files/solid_angle_concept.pdf
- https://cdn.shopify.com/s/files/1/0431/9058/3464/files/pdf_file_editor_exe.pdf
- https://cdn.shopify.com/s/files/1/0434/2661/1356/files/membrane_solutions.pdf
- https://cdn.shopify.com/s/files/1/0434/4204/5090/files/64616943158.pdf
- https://cdn.shopify.com/s/files/1/0429/4079/2999/files/lolijesub.pdf
- https://cdn.shopify.com/s/files/1/0434/2769/2695/files/1813389451.pdf
- https://cdn.shopify.com/s/files/1/0432/3137/9618/files/50427859732.pdf
- https://cdn.shopify.com/s/files/1/0440/4301/0213/files/22117554033.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_off00006039.bin6b19e58766c512e39bed11d15ef93d00c8e441d12e648366538eb997f935afa1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6039 | 5584 bytes |
font_01_sfnt_off00007312.bin88a26a3df0ac1feeacca48fb7aae80589161664d32cce3b43a269bb3141381aa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7312 | 9796 bytes |
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