MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.ru'. The document body, though partially corrupted, includes text suggesting it's a lure for a PDF titled 'Mathematics for economists pemberton pdf'. The presence of numerous external links, many pointing to Shopify domains, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's designed to redirect users to harmful content.
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=mathematics+for+economists+pemberton+pdf
- http://files.polonskyfilm.com/uploads/1/3/2/6/132696060/16dae1.pdf
- http://files.thecosmicbrain.net/uploads/1/3/1/1/131164159/mokakoloz-lijofodoti-zedotegojome-zagipuw.pdf
- http://files.raphaelchurch.org/uploads/1/3/2/7/132741089/jawefel.pdf
- https://cdn.shopify.com/s/files/1/0440/6591/5032/files/58724324544.pdf
- https://cdn.shopify.com/s/files/1/0431/2072/2080/files/84_guitar_scales_and_arpeggios_patterns.pdf
- https://cdn.shopify.com/s/files/1/0427/9717/0847/files/avg_pc_tuneup_key.pdf
- https://cdn.shopify.com/s/files/1/0433/5956/8037/files/81657124998.pdf
- https://cdn.shopify.com/s/files/1/0432/0513/2456/files/88099659376.pdf
- https://cdn.shopify.com/s/files/1/0431/3173/2132/files/power_amplifier_class_ab.pdf
- https://cdn.shopify.com/s/files/1/0435/5588/1111/files/69150294564.pdf
- https://cdn.shopify.com/s/files/1/0431/8904/3358/files/joxedaputaxure.pdf
- https://cdn.shopify.com/s/files/1/0428/8941/2767/files/22605773501.pdf
- https://cdn.shopify.com/s/files/1/0433/9869/3013/files/ctrl_delete_script.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004b7a.binbe998e9398d4c899ee2fd42596accebabd30424ddcc05d07e0ccbf9623ed47e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4B7A | 5508 bytes |
font_01_sfnt_off00005e0d.binebb5303bdc83f40b8f4a14b462d72e2a976e1173da669ed638f22848b56372f0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E0D | 9764 bytes |
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