MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many of which point to benign-looking PDF files hosted on WordPress.com, but one primary URL, 'https://trafffi.ru/123?keyword=metals+nonmetals+and+metalloids+worksheet+pdf', is flagged as suspicious. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a tactic to manipulate search engine results or to distribute malicious content. The ML classifier strongly flags this PDF as malicious, supporting the assessment of a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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External URI info PDF_URIPDF contains an external URL action
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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://trafffi.ru/123?keyword=metals+nonmetals+and+metalloids+worksheet+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://vuxuwavu.files.wordpress.com/2020/11/76309888565.pdf
- https://vumakatove.files.wordpress.com/2020/11/dragon_naturallyspeaking_12_serial_number.pdf
- https://devotiguvo.files.wordpress.com/2020/11/boatman_capital_report_babcock.pdf
- https://gijalexipo.files.wordpress.com/2020/11/the_wanderer_alain_fournier.pdf
- https://vadazigifexe.files.wordpress.com/2020/11/gopiv.pdf
- https://xobonub.files.wordpress.com/2020/11/tejubimowenifow.pdf
- https://dedisix.files.wordpress.com/2020/11/heladera_whirlpool_no_frost_448_manual.pdf
- https://s3.amazonaws.com/numegubowalonan/68567167441.pdf
- https://sisiviweze.files.wordpress.com/2020/11/50939477702.pdf
- https://uploads.strikinglycdn.com/files/06a6cde7-ab96-46f1-b594-af799ba9c880/61086179461.pdf
- https://dilopipo.files.wordpress.com/2020/11/demetivudaxakoleze.pdf
- https://s3.amazonaws.com/betefowubevat/manual_n_commercial_load_calculation.pdf
- https://juzonibi.files.wordpress.com/2020/11/hartalega_sdn_bhd_annual_report.pdf
- https://uploads.strikinglycdn.com/files/4cc2bf61-2bee-4604-a0ff-379e4e7c703c/genawako.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_off00004604.bin086bbff23b60e088ca46873acf6503a3c259f018b3584a10aaec734fcd613fa7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4604 | 5440 bytes |
font_01_sfnt_off00005873.bin880545573977a126a7d21390e1bb238e5fdfa66497fa9035c45d2c5df5d000cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5873 | 9860 bytes |
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