MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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=ielts+general+essay+samples+band+9 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4483071/normal_606cde5de1a8b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448124/normal_606da26e1b838.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388271/normal_5ffb7a50ebdb7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470968/normal_603f1fc6c8885.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4428329/normal_600914775ff47.pdfIn PDF document text
- https://xatawozenovug.weebly.com/uploads/1/3/4/8/134886035/lajufisozuje_duradutuxobofo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489983/normal_6039fd706b5f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374372/normal_606a26272f7b6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4483610/normal_6047b55a6274d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453907/normal_602dd3692666d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481515/normal_602d978ca095f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480403/normal_601b4d4882497.pdfIn PDF document text
- https://nawawuxilebop.weebly.com/uploads/1/3/4/6/134679594/jubotonubuxot.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380219/normal_60608ef067b63.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495536/normal_5ff174cb5760e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370071/normal_6068c15fdd8b8.pdfIn PDF document text
- https://mobasulu.weebly.com/uploads/1/3/0/7/130776822/sufesek-guvifiwanuloteb-pexatizozep.pdfIn PDF document text
- https://zibozofebar.weebly.com/uploads/1/3/0/7/130740265/fisatixi-zetobamemifito-biwewube-kajanapote.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379498/normal_5fd1457f73b9c.pdfIn PDF document text
- https://zegikawa.weebly.com/uploads/1/3/4/6/134640481/lojemif.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/f4873c22-b4e9-4454-8439-5bc784fa78a6/minuta_contrato_de_arrendamiento_de_vivienda_colombia_2020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a31dbf0a-1949-47ed-86e4-815c0a1e2aac/lifan_125cc_engine_oil_change.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9b5cdb2-4a7a-41ef-aa5f-a1ae7447e9f8/kijeruk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a4caa67e-216e-4313-a14f-866c47ab31f4/1105107973.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_off00014af8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14AF8 | 5612 bytes |
SHA-256: d47e27a90267ca71aabd36414ec0d73d301067b977cbfb7419e70c38e95191b1 |
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font_01_sfnt_off00015df4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15DF4 | 10644 bytes |
SHA-256: 299e1e4417efda9e29e73970f7b27bb0b969abd3008a3383e40f520beb976733 |
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