MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains a large number of embedded external links, a technique commonly used for SEO spam or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate this malicious intent. While no scripts were extracted, the presence of numerous URLs, including one pointing to 'kuzutuzo.ru', suggests a phishing or content-scraping attack pattern. The ClamAV detection further supports its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://kuzutuzo.ru/strik?utm_term=blackmagic+ultrastudio+4k+setup PDF link annotation
- https://cdn-cms.f-static.net/uploads/4408478/normal_6051479973abf.pdfIn PDF document text
- http://ijmalan.xyz/cast_of_what_still_remainsd0b1o.pdfIn PDF document text
- http://potolkilife.ru/115706325792bbtg.pdfIn PDF document text
- http://de-bewertung-id-q2e5t23.top/under_the_dome_season_1_episode_2_youtubefxmje.pdfIn PDF document text
- http://lnstagramservicecopyrights.com/premier_league_football_datessq6u9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4391896/normal_5fdec573b0652.pdfIn PDF document text
- http://idealsit.space/zulujanuzebiwuruxuxuspifra.pdfIn PDF document text
- http://testvvd.xyz/dancing_with_the_stars_season_18moanj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412761/normal_6027d45b1d98c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467571/normal_604b23ad30c85.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://jibaberumakome.rf.gd/acog_guidelines_hyperemesis_gravidarum.pdfIn PDF document text
- https://05efeaee-ea5b-4dc8-bddc-a5098cc0dcbd.filesusr.com/ugd/c06c30_9f338ec2ca444357b739775007ebb599.pdf?index=trueIn PDF document text
- https://459ec6dd-5b69-4322-a182-74abbfaa0e48.filesusr.com/ugd/221eaa_2d1ec436dea4476caad93f4edb20192b.pdf?index=trueIn PDF document text
- https://92ddf5cc-4ce7-4caf-b117-8241c553a727.filesusr.com/ugd/42bae0_1d264f1b300f4f0dbf50156a0696b3cb.pdf?index=trueIn PDF document text
- https://eae964be-cf9f-49a8-9b2f-00020d526acb.filesusr.com/ugd/e932cf_431dc1fc51614954be69b75a38b91688.pdf?index=trueIn PDF document text
- http://nugafafekovad.epizy.com/ambarsariya_suit_video_song.pdfIn PDF document text
- https://992bddda-184d-467f-a815-0165b41a2208.filesusr.com/ugd/69695d_96f5306edba34710af4c855e65572d21.pdf?index=trueIn PDF document text
- https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_5d2af1ee73d548f180a1b3190ea6a3a9.pdf?index=trueIn PDF document text
- https://ff102949-4c65-4b7b-925c-ea9a98d885fa.filesusr.com/ugd/7a16bb_025aaaed8e3c46fb892cfb1e8d35e508.pdf?index=trueIn PDF document text
- https://a8a57b57-a5e9-4b5c-b824-02731ce3a1bd.filesusr.com/ugd/cfa667_6a6326aac56c4eb4a51bfaa6c2316bf4.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_off0000ff8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF8F | 5592 bytes |
SHA-256: dcd9e40f669db9e1f1c01d1f4e682363e95ddb13ad78da9348202c916358ad19 |
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font_01_sfnt_off00011294.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11294 | 11264 bytes |
SHA-256: a398ac1bc93fc4c3e2425642b053116d65bfa2226743d97586e3a1eb74150dd3 |
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font_02_sfnt_off0001393a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1393A | 16060 bytes |
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90 |
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