MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file, identified as malicious by ClamAV and an ML classifier, contains a large number of external links, many pointing to disposable hosting. The document body, though heavily obfuscated, suggests a lure related to 'Coshh assessment form template'. The presence of numerous external links, including one to 'kuzutuzo.ru', indicates a likely attempt to redirect users to phishing sites or download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/123?utm_term=coshh+assessment+form+template PDF link annotation
- https://sepenunaxob.weebly.com/uploads/1/3/0/7/130776074/nelofixawozu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369322/normal_606af50eb0ab7.pdfIn PDF document text
- https://senemoribut.weebly.com/uploads/1/3/4/7/134703027/5320429.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425515/normal_6027b31ba6ec3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418000/normal_6040186ad102b.pdfIn PDF document text
- https://biroputasore.weebly.com/uploads/1/3/4/7/134747039/tamezanu_ramepiv_duxasamibixemir_totijuj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447273/normal_602e131866444.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388426/normal_5fcdaa8c841d2.pdfIn PDF document text
- https://tojumemi.weebly.com/uploads/1/3/1/3/131379390/dibaleb_gekodiximuredas.pdfIn PDF document text
- https://ladozazewuse.weebly.com/uploads/1/3/4/0/134095850/wukejelusujijov.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/086dfb9c-d00c-40f8-9951-f4bbbbd5d5f4/the_whipping_boy_chapter_1_read_aloud.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e71e0449-b277-4d10-9b41-d3c817cb0936/oracle_11g_sql_developer.bat_not_found.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d9090887-e3dd-4d88-a3fa-f271a05401d2/73130034929.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5baa93fd-f13e-4e2b-a34a-04f96a36874c/green_kinemaster_pro_apk_download_no_watermark_apkpure.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f5c989f4-2dcc-4f80-b0eb-d5fe05df050d/miller_welder_repair_parts.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aa432b23-30d2-4df7-b7d4-0abb17702195/the_misbehavior_of_markets_audiobook.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cbcce508-58b5-4cab-9640-a1208b45359a/wuruwumabozubudobokofo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0958c502-f567-4055-980b-a5fb52b53d32/master_mantak_chia_youtube.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/61d16c06-003b-428a-b5a3-8257d8ebb728/miniature_english_bulldog_breeders_illinois.pdfIn 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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f2b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2B0 | 5044 bytes |
SHA-256: 92e8d20d47d2395b9a08ec2ff9f832d916d5812e42217ec3954d88f5ab81c711 |
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font_01_sfnt_off000103a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103A9 | 10880 bytes |
SHA-256: 849a661d1a57a41d890519a1f3f3d287fa6f9d6c9ff68fc790dbd3ad96193a04 |
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