MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many of which point to SEO redirectors, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary lure appears to be related to 'Nobela fingerstyle tabs ukulele', directing users to a suspicious URL.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://seumenha.ru/strik?utm_term=nobela+fingerstyle+tabs+ukulele PDF link annotation
- https://cdn-cms.f-static.net/uploads/4415546/normal_6019c3db42339.pdfIn PDF document text
- https://s3.amazonaws.com/tawosutosuxi/96069307824.pdfIn PDF document text
- http://craftsmansmetics.com/computer_dos_commandskfdtu.pdfIn PDF document text
- http://testersairf.xyz/87681727158dil1f.pdfIn PDF document text
- http://hiziryigit.online/minolu1be4e.pdfIn PDF document text
- https://s3.amazonaws.com/divikufifir/3_week_look_ahead_schedule_template_excel.pdfIn PDF document text
- https://s3.amazonaws.com/nigimul/xefapadu.pdfIn PDF document text
- http://update-win20.online/756410220118qpve.pdfIn PDF document text
- http://italywow.pro/577224726992rqtz.pdfIn PDF document text
- https://s3.amazonaws.com/mokixetat/what_do_you_understand_by_quantum_tunneling.pdfIn PDF document text
- https://s3.amazonaws.com/rokuwapesu/cisco_sfp-_h10gb-_cu1m_datasheet.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473053/normal_5fffa164a01bf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392872/normal_5fd324e62c514.pdfIn PDF document text
- http://propovar.ru/wovirufopazabufh2nh.pdfIn PDF document text
- https://s3.amazonaws.com/kabisebax/93689424966.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426060/normal_60143ba5aa331.pdfIn PDF document text
- http://reabook.online/42508848911be6a2.pdfIn PDF document text
- http://detonicufficiale.website/gogoragixalokae8dy.pdfIn PDF document text
- http://circulshtangcalip.website/lixaxixonh5bgn.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_3c26d85639724e76a8c1b460eb2244d1.pdf?index=trueIn PDF document text
- https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_19dff4168e254bdf933037465149dff4.pdf?index=trueIn PDF document text
- https://661c91a2-68a2-4ae3-aaac-ef96b6cc7894.filesusr.com/ugd/b926a8_9bbb65f27bb745bdb22532f7da21bc00.pdf?index=trueIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fd22.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD22 | 5208 bytes |
SHA-256: 79feb93e12afbe3a3381082682d791289e6b8ffc767d2d228e1475f553376148 |
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font_01_sfnt_off00010f01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F01 | 12096 bytes |
SHA-256: 97094fc94ccd2e947512a6efc60da1ce4861d325b597a7b5e35962e77193cb67 |
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font_02_sfnt_off0001374c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1374C | 16036 bytes |
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940 |
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