MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, many of which are hosted on link farms, indicating a phishing or spamming operation. The primary URL, 'https://jacksth.ru/strik?utm_term=conjugacion+de+verbos+irregulares+en+espa%25C3%25B1ol+pdf', suggests a lure related to Spanish verb conjugations to entice clicks. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for malware distribution or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9967
Heuristics 5
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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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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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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://jacksth.ru/strik?utm_term=conjugacion+de+verbos+irregulares+en+espa%25C3%25B1ol+pdf
- https://cdn-cms.f-static.net/uploads/4412763/normal_600c68dfc7039.pdf
- https://falijufik.weebly.com/uploads/1/3/5/3/135349852/4dcd5314492.pdf
- https://cdn-cms.f-static.net/uploads/4378381/normal_5fd7783723b59.pdf
- https://lewuroluloxujul.weebly.com/uploads/1/3/4/6/134678017/bawafazaranub.pdf
- https://nebijuwako.weebly.com/uploads/1/3/4/3/134376342/5448017.pdf
- https://lubagevaruzazej.weebly.com/uploads/1/3/2/7/132712663/7774846.pdf
- https://cdn-cms.f-static.net/uploads/4390684/normal_605a771489f81.pdf
- https://cdn-cms.f-static.net/uploads/4421199/normal_60434391554cf.pdf
- https://zugufavowi.weebly.com/uploads/1/3/0/8/130874222/899a32c70f.pdf
- https://bogezemobazuv.weebly.com/uploads/1/3/1/8/131856224/japolodonuvejosizo.pdf
- https://pifeposanitu.weebly.com/uploads/1/3/4/7/134753567/wogokimo.pdf
- https://cdn-cms.f-static.net/uploads/4496582/normal_5fd12b1279bbd.pdf
- https://sivivaleretuvu.weebly.com/uploads/1/3/4/3/134324596/c3092e8.pdf
- https://cdn-cms.f-static.net/uploads/4408593/normal_60676da732459.pdf
- https://cdn-cms.f-static.net/uploads/4409806/normal_606258c85d60c.pdf
- https://wetugaremuzen.weebly.com/uploads/1/3/5/2/135298520/duwuzodi.pdf
- https://cdn-cms.f-static.net/uploads/4466398/normal_5fe9235937d9e.pdf
- https://cdn-cms.f-static.net/uploads/4417308/normal_606cd5fa4250c.pdf
- https://xopibazoditovo.weebly.com/uploads/1/3/1/4/131406935/84fe0a701b9.pdf
- https://cdn-cms.f-static.net/uploads/4499282/normal_60418cf3d4a02.pdf
- https://zikowipon.weebly.com/uploads/1/3/5/3/135300096/f07f7bc2.pdf
- https://cdn-cms.f-static.net/uploads/4485162/normal_6044caafb754f.pdf
- https://cdn-cms.f-static.net/uploads/4418197/normal_604f47bbc7f17.pdf
- https://masevaru.weebly.com/uploads/1/3/5/3/135346062/5638777.pdf
- https://cdn-cms.f-static.net/uploads/4450353/normal_601b772fde522.pdf
- https://wanukepaxe.weebly.com/uploads/1/3/4/4/134454717/kabetorak.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ffcb.bin460ac6530166cff85f703a3bd693bb6f80061cbd5ca2738f18ccc762728ff0ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFCB | 5716 bytes |
font_01_sfnt_off00011316.bin4ce98121166008aeada7a5bc6017f30c9d4fe7dd27bd51c5995648660e2df6ad |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11316 | 12236 bytes |
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