MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file contains numerous external links, with a critical heuristic identifying it as a PDF link farm designed for SEO. One prominent URL, 'https://jacksth.ru/strik?utm_term=igt+slot+machine+error+codes', is flagged as a redirector for free-download phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further payloads or phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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=igt+slot+machine+error+codes PDF link annotation
- http://visumetanopigi.iblogger.org/biocontrol_of_fungal_diseases.pdfIn PDF document text
- https://cdn.sqhk.co/bexuxoxabim/giB8Xhe/39675361262.pdfIn PDF document text
- https://cdn.sqhk.co/mizipudi/bdVjeK4/10223690899.pdfIn PDF document text
- https://wazafalesozem.weebly.com/uploads/1/3/4/4/134498636/1510702.pdfIn PDF document text
- https://wugisawenepo.weebly.com/uploads/1/3/4/7/134749509/fedunazusa-zetirarovupobig-direfoxivon-bofofuzoza.pdfIn PDF document text
- https://cdn.sqhk.co/tajudozizif/jaGhjjb/blood_pressure_by_age_calculator_nhs.pdfIn PDF document text
- https://nalodewemutut.weebly.com/uploads/1/3/1/1/131164475/tefanexatin.pdfIn PDF document text
- http://fajopapapabin.22web.org/50773559774.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/xapota/66775824989.pdfIn PDF document text
- https://s3.amazonaws.com/nuvukivaxiren/the_monk_and_the_riddle_book_summary.pdfIn PDF document text
- https://460eb545-5389-4aa9-9e78-d1074a8bca0c.filesusr.com/ugd/21a131_3006e26e0e6547c2978155c6a687adcd.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/resisuna/natefopa.pdfIn PDF document text
- http://vowurosato.rf.gd/chacha_chaudhary_comics_in_bengali.pdfIn PDF document text
- https://s3.amazonaws.com/gusule/witchery_shoe_guide.pdfIn PDF document text
- https://s3.amazonaws.com/zamemigojat/derivation_examples_word_formation.pdfIn PDF document text
- https://s3.amazonaws.com/jukezeluf/28993239429.pdfIn PDF document text
- https://f98f40d2-b649-4e6b-99af-b89bbf2331ff.filesusr.com/ugd/724bd4_8d7d5439558e46678bf4a3bd984996cf.pdf?index=trueIn PDF document text
- https://297de083-771a-4730-a3b8-a2afe8c7d209.filesusr.com/ugd/47424f_50ca4223f2be42e38cd0fd6ab75e6682.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/pirofopafu/67471850336.pdfIn PDF document text
- https://s3.amazonaws.com/sezebepit/24357245903.pdfIn PDF document text
- https://b1b0174c-961c-4936-87f6-765e1132391e.filesusr.com/ugd/6cf804_01e3690fc26c43b0864bc768dda50c98.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xedewofuretujo/dewevupaf.pdfIn 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_off000102e1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102E1 | 5288 bytes |
SHA-256: b6c1b1b20ca113defede02dd5ed3b2009ff9729ef76a9d9ad3084441f1271e05 |
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font_01_sfnt_off000114af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114AF | 12116 bytes |
SHA-256: 82e22cd34367c680c16d154df0f4c400f2c4ab5f765ffafab580575ff0a7a334 |
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