MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. ClamAV and ML classifiers identified this file as malicious, specifically as a phishing trojan. The embedded URLs likely lead to malicious content or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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=area+e+perimetro+de+figuras+planas+exercicios+resolvidos+pdf PDF link annotation
- https://sileperu.weebly.com/uploads/1/3/1/4/131406390/7041232.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444885/normal_604d28c2459c1.pdfIn PDF document text
- https://gonadasefu.weebly.com/uploads/1/3/5/3/135345348/vevimej.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378379/normal_60633bc13a6ec.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444636/normal_603a5bdb50abf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479441/normal_601d7d41bf43e.pdfIn PDF document text
- https://xivapumi.weebly.com/uploads/1/3/1/6/131606059/sofubo_zaniwot_tarapebiroxu_menof.pdfIn PDF document text
- https://wupizesave.weebly.com/uploads/1/3/4/5/134581048/39727478989623a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458829/normal_60376a6f5d777.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369307/normal_5ffdee2d2a835.pdfIn PDF document text
- https://kozezivu.weebly.com/uploads/1/3/4/4/134444222/nofidisavarik-resomif-bimunizuxu-bokogare.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4456376/normal_5feece961e1a7.pdfIn PDF document text
- https://ruwivogisi.weebly.com/uploads/1/3/4/2/134265822/xexetibimimuden.pdfIn PDF document text
- https://tenanetudoji.weebly.com/uploads/1/3/4/2/134266315/521152.pdfIn PDF document text
- https://xuvuvigaxopezut.weebly.com/uploads/1/3/4/7/134721928/lipawofexowone-penunolam.pdfIn PDF document text
- https://nagajaburelu.weebly.com/uploads/1/3/2/7/132740350/vodipumikawuv.pdfIn PDF document text
- https://pezilesuwubev.weebly.com/uploads/1/3/4/6/134639222/7313038.pdfIn PDF document text
- https://puwukozo.weebly.com/uploads/1/3/4/5/134587621/610481.pdfIn PDF document text
- https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/5787284.pdfIn PDF document text
- https://mevaledemoxawe.weebly.com/uploads/1/3/4/6/134633525/90aba1.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e555.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE555 | 5592 bytes |
SHA-256: 15b4f71ef6bb40a4934c3dcf3fa3227d4f4e2c5350f0d0be24ae6e2ab336626f |
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font_01_sfnt_off0000f85e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF85E | 12992 bytes |
SHA-256: 8e008e20446ecd614da452ae234a17cad512f92831293c3106b531ab49308861 |
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font_02_sfnt_off0001204d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1204D | 16068 bytes |
SHA-256: 5d72d630640305d452d914085fd6c65e0d8125198bed8028c282d44fd0327be8 |
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