MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO spam operation. The embedded URLs, such as 'https://leonvi.ru/strik?utm_term=ejercicios+verbos+irregulares+presente+indicativo+espa%25C3%25B1ol', are likely used to redirect users to malicious content or phishing pages. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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://leonvi.ru/strik?utm_term=ejercicios+verbos+irregulares+presente+indicativo+espa%25C3%25B1ol PDF link annotation
- https://cdn.sqhk.co/bidelefo/xhdm5ag/35029695810.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4415331/normal_5fde15064844a.pdfIn PDF document text
- https://cdn.sqhk.co/gepumenujeme/RADhjcN/musica_instrumental_de_los_80_para_escuchar_gratis.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4486565/normal_5fc7fbd55f6e7.pdfIn PDF document text
- https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/62cbfd42075.pdfIn PDF document text
- https://fetatoba.weebly.com/uploads/1/3/4/6/134689412/ligebiwedaxoku.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368248/normal_6044ca17c1dc7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495976/normal_5ff1cace9e0ee.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421957/normal_6015e318e244c.pdfIn PDF document text
- https://cdn.sqhk.co/jezuleku/iGggvOR/nintendo_switch_online_family_12_month.pdfIn PDF document text
- https://tujezagen.weebly.com/uploads/1/3/4/7/134775207/nodekaxaka.pdfIn PDF document text
- https://zomogazafef.weebly.com/uploads/1/3/5/3/135348967/gorol_pepewawoxitovu.pdfIn PDF document text
- https://cdn.sqhk.co/xeloxilava/cqEhhgj/pamuturavi.pdfIn PDF document text
- https://cdn.sqhk.co/gabisolovima/liAjaia/closest_indoor_skydiving_near_me.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/dejolavubukugeb/concatenate_in_crystal_reports.pdfIn PDF document text
- https://s3.amazonaws.com/topipovikapari/pro_tools_9_hd_crack_mac.pdfIn PDF document text
- https://8533cbf3-c0d6-400c-bdf8-8ca38cf0242b.filesusr.com/ugd/135178_cd914f14ff9e4c64a00e8465ec62b098.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/rurosaveruk/zemolu.pdfIn PDF document text
- https://bf130ee1-1463-4c69-9604-1b23772ced92.filesusr.com/ugd/b4609a_e77e61a29a52439087ecc1282b4e50db.pdf?index=trueIn PDF document text
- https://44f68060-d5e3-4d58-b4e7-e3760392f352.filesusr.com/ugd/49488e_94137e3057ff41338b9c84211285b418.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/welanisowari/witixagusapifonibonis.pdfIn PDF document text
- https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_f25a092b2a264766902e96a18fdc5c28.pdf?index=trueIn PDF document text
- https://e824aeac-d22a-4b45-bb3c-17051d6ee04f.filesusr.com/ugd/de60da_b71f78de11ed43abb03bd19d386dd038.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00017840.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17840 | 5688 bytes |
SHA-256: d608ce93443523906db6d6e7697d105c8b04b070908784c90ead217561eabb3a |
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font_01_sfnt_off00018b74.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18B74 | 12284 bytes |
SHA-256: 05020dd921a31e70fe4e15bd59e91747bc200b7eb572dc0f5e1bfb76989cde0c |
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