MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector at `ttraff.ru`. This suggests the document is designed to lure users into clicking malicious links under the guise of providing academic resources. The ML classifier strongly supports the malicious verdict.
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=longman+academic+writing+series+1+answer
- http://files.uktravelhacking.com/uploads/1/3/0/8/130813846/1494025.pdf
- http://files.executivesuitesofcapecoral.com/uploads/1/3/1/3/131384098/9190152.pdf
- http://files.portugesestonethenaturalpath.com/uploads/1/3/0/7/130739712/902317.pdf
- https://cdn.shopify.com/s/files/1/0433/5117/9423/files/english_speaking_improvement_tips.pdf
- https://cdn.shopify.com/s/files/1/0440/2708/4965/files/92579840793.pdf
- https://cdn.shopify.com/s/files/1/0432/9809/5272/files/dopagujadurop.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdf
- https://cdn.shopify.com/s/files/1/0430/9244/3303/files/duxebafemobijinikowomar.pdf
- https://cdn.shopify.com/s/files/1/0440/7335/3366/files/itextsharp_c_getting_the_comment_from.pdf
- https://cdn.shopify.com/s/files/1/0431/8789/6488/files/34399611323.pdf
- https://cdn.shopify.com/s/files/1/0431/6764/5852/files/64965187839.pdf
- https://cdn.shopify.com/s/files/1/0445/3462/8516/files/practical_management_science_4th_edition.pdf
- https://cdn.shopify.com/s/files/1/0438/4597/6221/files/7990147644.pdf
- https://cdn.shopify.com/s/files/1/0429/2539/2035/files/vivurunivekerofuw.pdf
- https://cdn.shopify.com/s/files/1/0434/7772/9430/files/demonimajifila.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_off000057ce.bin3b49d703c5d7edaad1221d758be2d52426c6b0092d7ffa9d35468a87813692ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x57CE | 5312 bytes |
font_01_sfnt_off000069d9.bin8d38852b6d5634182edad3b9f4223af2d74586e6296d864df442974d906bcfcb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69D9 | 14552 bytes |
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