MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a malicious redirector link disguised as calculus olympiad problems. The ML classifier strongly indicates maliciousness, and the PDF structure includes a large number of external links, many hosted on Shopify, likely for SEO manipulation to increase visibility. The primary malicious IOC is the ttraff.com redirector URL.
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.com/pify?keyword=calculus+olympiad+problems+pdf
- http://files.r2sg.com/uploads/1/3/1/3/131380175/lomalukasuzire.pdf
- http://vimozi.lakeantoine.org/uploads/1/3/0/7/130775883/880c165790b.pdf
- https://cdn.shopify.com/s/files/1/0431/0489/5143/files/riguvekirutosemixut.pdf
- https://cdn.shopify.com/s/files/1/0438/4178/1920/files/oracle_11g_sql_interview_questions_and_answers.pdf
- https://cdn.shopify.com/s/files/1/0434/6164/0358/files/upstream_english_book_b1.pdf
- https://cdn.shopify.com/s/files/1/0433/0792/5654/files/nofizokoriwaro.pdf
- https://cdn.shopify.com/s/files/1/0437/1313/4757/files/oracle_sql_queries_interview_questions_and_answers.pdf
- https://cdn.shopify.com/s/files/1/0431/8153/9489/files/71411927419.pdf
- https://cdn.shopify.com/s/files/1/0431/5339/1780/files/43511693449.pdf
- https://cdn.shopify.com/s/files/1/0428/7250/4483/files/65447981598.pdf
- https://cdn.shopify.com/s/files/1/0430/5174/5442/files/vizuwejixedezurowonon.pdf
- https://cdn.shopify.com/s/files/1/0432/2734/9159/files/gevuraguraworugi.pdf
- https://cdn.shopify.com/s/files/1/0430/4191/5042/files/zejemenamurewotuvexe.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_off00006617.bin458dad2755ecf56da5a04c4cfff2ee5e247f62292e3203c8f726b4536f51f3fe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6617 | 5448 bytes |
font_01_sfnt_off0000788a.bin408d22b2703ccfd81d0e2552aa268fdc75a4077896c006f48567e8e1b183b806 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x788A | 11104 bytes |
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