MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of embedded links, many of which point to disposable or potentially malicious domains, indicating a link farm or phishing attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'yafferge.ru' as malicious redirector infrastructure. The ML classifier also strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://yafferge.ru/wix?keyword=water+the+universal+solvent+practice+worksheet+answers In PDF document text
- http://zexejodubaxiku.mygamesonline.org/40876975516.pdfIn PDF document text
- http://pofaduxiruk.getenjoyment.net/loloderur.pdfIn PDF document text
- https://buwulikifem.weebly.com/uploads/1/3/4/5/134583505/ruxuxibolewur.pdfIn PDF document text
- http://bizifemodefi.mygamesonline.org/adjective_order_exercises_with_answers.pdfIn PDF document text
- https://rikudebuwixe.weebly.com/uploads/1/3/4/5/134589128/tivozimo.pdfIn PDF document text
- http://thedouche.xyz/49805201614lubuy.pdfIn PDF document text
- http://bulakirip.getenjoyment.net/benchmarking_notes.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4503767/normal_5fc5ece059f2f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382627/normal_60265d3194261.pdfIn PDF document text
- http://mishgen.com/91633283743vatuk.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4443588/normal_5feb220d665f0.pdfIn PDF document text
- https://dodafuwunolig.weebly.com/uploads/1/3/4/0/134016835/3241662d32.pdfIn PDF document text
- https://xunilizavokuniz.weebly.com/uploads/1/3/6/0/136050149/9436749.pdfIn PDF document text
- http://avit0.pro/xefudibapadk3ayh.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4378390/normal_5febb5829b788.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/c661379a-5397-40c9-aaf2-338789040c07/samsung_galaxy_note_20_ultra_2020_price_in_bangladesh.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/574938a3-b649-48c9-8008-2e75b7241e0d/34288060631.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9cc24719-3bf6-43be-9222-7e8cae65af45/simple_present_exercises_with_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e8af7c13-f63f-4674-a2bc-4b9e8514b43d/84463141020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fdef8b1a-9de7-4f7a-aefe-f4d0a62eecf9/27056218576.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c593d6d7-4012-4f7b-8366-f5e59854c4b6/pojegixudivinow.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1d9db96d-d8dd-4776-aca7-09247847195c/kawobopagikolizo.pdfIn PDF document text
- http://vuxepogi.atwebpages.com/gogilo.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_off0000e3d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3D4 | 5252 bytes |
SHA-256: 3ad7c233f0888b25dce676ac88914c7ae8019fbe1392b422492658c4f890ecde |
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font_01_sfnt_off0000f5c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5C6 | 10652 bytes |
SHA-256: daa615fc070f3e526d9199d40f38bb503030c8de7b98abc7876e8af06a37a058 |
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