MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous embedded URLs that redirect to external sites, with at least one URL (`https://jacksth.ru/strik?...`) appearing to be part of a phishing or malware distribution campaign. The presence of external URIs and the link farm heuristic suggest the primary purpose is to lure users to potentially harmful destinations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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 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://jacksth.ru/strik?utm_term=%25E2%2580%25A2+%25C2%25BFqu%25C3%25A9+opini%25C3%25B3n+tienes+sobre+el+aprendizaje+basado+en+proyectos+%2528abp%2529
- https://static.s123-cdn-static.com/uploads/4470962/normal_5ffb1fe7d5fee.pdf
- https://cdn.sqhk.co/kogujipubap/bdhcAhj/zazuxevokulofegover.pdf
- https://cdn-cms.f-static.net/uploads/4453553/normal_606022214fbe0.pdf
- http://deduwewelu.iblogger.org/26285795303.pdf
- https://cdn.sqhk.co/xugavizira/gvhjzOo/91373852373.pdf
- https://cdn-cms.f-static.net/uploads/4410415/normal_602ba47ae9aee.pdf
- https://cdn.sqhk.co/janimivaxo/gEFjdii/77649830750.pdf
- https://cdn-cms.f-static.net/uploads/4388169/normal_603b2ed6cf2bb.pdf
- https://static.s123-cdn-static.com/uploads/4415065/normal_6002e6a6c6fdd.pdf
- https://cdn-cms.f-static.net/uploads/4476595/normal_602b624fcb0b5.pdf
- https://cdn.sqhk.co/givesaxi/hdbOihh/wimev.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_62acb6c4ed944a5e84392aeeae6be579.pdf?index=true
- https://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_93d3605f6b6d4778b68f8d2a82d573e2.pdf?index=true
- http://tobekiginekafo.epizy.com/56561782191.pdf
- https://s3.amazonaws.com/zarevizebi/puwekijibirutenejaxar.pdf
- https://86860ce8-2957-478e-97c3-2abddc2d2c3c.filesusr.com/ugd/754ed1_9237512af59041ffac93b3af8a13f686.pdf?index=true
- https://04a9e765-cf69-4035-9b9a-998d8fb4e692.filesusr.com/ugd/8c5016_982fd55e1cc74c5eb65332782e639883.pdf?index=true
- https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_5df057aa644549fe8cfbf5637812905d.pdf?index=true
- http://felepukagerek.epizy.com/3397130297.pdf
- https://s3.amazonaws.com/rumezo/11312323718.pdf
- https://s3.amazonaws.com/kagedatabujo/87675956657.pdf
- 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_off0000e8eb.bin64c706d499f2108f137e48e12bc43e934bd40abd92f5be8e339ca9fa0ce26319 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8EB | 6096 bytes |
font_01_sfnt_off0000fd50.binf54b2eb4320828839f60ab28bbf31be7e5c31c204999a449de968c87a6ef625c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD50 | 10816 bytes |
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