MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'jacksth.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'school uniform essay prompts', aligning with a social engineering tactic to trick users into visiting the malicious link.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 4
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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=school+uniform+essay+prompts
- http://dibopisol.iblogger.org/attribution_rules_tax_reform.pdf
- http://extrameets.fun/tamil_magazine_free_download_201cxlov.pdf
- http://cosmeteca.com/how_to_update_moto_g_stylusfflcj.pdf
- https://static.s123-cdn-static.com/uploads/4476758/normal_5ff1ae746513e.pdf
- https://cdn-cms.f-static.net/uploads/4368999/normal_601952a0af8d1.pdf
- http://jopuvalipi.22web.org/6250758572.pdf
- https://cdn-cms.f-static.net/uploads/4446790/normal_60595a332b070.pdf
- https://cdn-cms.f-static.net/uploads/4388835/normal_6021f52bbeb66.pdf
- http://aycotoro7.xyz/how_do_i_use_my_behringer_x32_as_an_audio_interfaceah6cf.pdf
- http://profaudit32.ru/15668647188qb7sa.pdf
- http://wide-mean.top/human_trafficking_2019_statisticssvkfb.pdf
- https://cdn-cms.f-static.net/uploads/4489415/normal_5fd251fc20573.pdf
- http://profaudit32.ru/sentence_writing_practice_worksheetshbom1.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/2dd9beba-3219-4738-b8ff-4046bc474bc0/56201975109.pdf
- https://uploads.strikinglycdn.com/files/7c90b036-b91e-4669-acc1-5754bebdc5f8/mugoligakobuxa.pdf
- https://83d12552-0bc1-4415-b221-1da25caacb9b.filesusr.com/ugd/1e11d0_8963e9014bf14b22a9e1717c11a27993.pdf?index=true
- https://ac6a5e95-3fab-4d4b-a7e7-0ef4c71e5929.filesusr.com/ugd/32c278_7a4c780bb6b94cad9f9330c3b05e7431.pdf?index=true
- https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_095eb801aaf74a708f05db55a9cd8a9e.pdf?index=true
- https://37e0f79d-b0c1-4727-b76d-5b759c81288f.filesusr.com/ugd/9c66ff_8a5362ced33649cf802d22d1b3e60d8c.pdf?index=true
- 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_off00019b83.bin8bc57c23ab22398b71c0279907a59fefc9cac9d9ad49f7bac2f5ac1238c7498f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19B83 | 5460 bytes |
font_01_sfnt_off0001adf4.bin31509ae4dda3f125efc879dcfa75c4fce30196fe29de8b6db6eebf3821764481 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1ADF4 | 11044 bytes |
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