MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'probability mass function questions' and a URL that appears to be part of a link farm designed to manipulate search engine results. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
-
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.
-
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.
-
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.
-
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/wix?keyword=probability+mass+function+questions
- https://cdn.shopify.com/s/files/1/0433/4796/8149/files/kebubuguromikakezarobama.pdf
- https://cdn.shopify.com/s/files/1/0430/3519/7602/files/7188260797.pdf
- https://cdn.shopify.com/s/files/1/0432/5287/5424/files/buteyko_breathing_technique_for_asthma.pdf
- https://cdn.shopify.com/s/files/1/0430/3595/1257/files/49346873645.pdf
- https://cdn.shopify.com/s/files/1/0438/4161/8082/files/55182772133.pdf
- https://cdn.shopify.com/s/files/1/0437/4495/2471/files/standard_deviation_python.pdf
- https://cdn.shopify.com/s/files/1/0435/5109/6984/files/25265149522.pdf
- https://static.usrfiles.com/ugd/b8c837_1a3a734cf46e429b9e3999b0607068bf.pdf
- https://static.usrfiles.com/ugd/b8c837_1eb702da17994c0290abf58c1edf473f.pdf
- https://static.usrfiles.com/ugd/2f3ac6_52ac41de56344bb780fae0dd0ead3101.pdf
- https://static.usrfiles.com/ugd/74a852_62f1d3cf863d4644be5439f843bd252b.pdf
- https://static.usrfiles.com/ugd/136d07_8e24859d66bd4df2b2eb443f8e7cfb73.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_off00006460.bine68c66b555504a545820601e85fa8ff5d130abedf9a76081d072a14584fe0ec6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6460 | 5396 bytes |
font_01_sfnt_off000076ac.bin7e1f26b4b74f00825ce5929352b30ae722e2b0fe572d080b4b957f9604cdfa2a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76AC | 14896 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.