MALICIOUS
184
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 heuristics reveal it functions as a link farm, containing numerous external URIs pointing to disposable hosting, suggesting a phishing or SEO manipulation scheme. The embedded URLs, such as 'https://midufefew.ru/award?keyword=anemias+microcytic+pdf', are likely used to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9129
Heuristics 5
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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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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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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://midufefew.ru/award?keyword=anemias+microcytic+pdf PDF link annotation
- https://static.s123-cdn-static.com/uploads/4416125/normal_5fdf5369d2b02.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407733/normal_60173a5d93949.pdfIn PDF document text
- https://s3.amazonaws.com/muwemivumazulax/jadotulunibug.pdfIn PDF document text
- https://s3.amazonaws.com/xukirizugukugi/18281137911.pdfIn PDF document text
- http://sovadarasuzepa.iblogger.org/18352412108.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447252/normal_6028fe9b96feb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464877/normal_6040649c4beb0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383929/normal_5fefcc60ab05b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450440/normal_5fcbfbe28d564.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376858/normal_5fe6deaf539d9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417645/normal_603b5f426f3bd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367622/normal_6027a75bc7de0.pdfIn PDF document text
- https://s3.amazonaws.com/woxewiwupir/plan_unico_de_cuentas_para_comerciantes_en_colombia.pdfIn PDF document text
- https://s3.amazonaws.com/legipalofi/july_2020_calendar_template_word.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366654/normal_5fd5f50cb546b.pdfIn PDF document text
- https://s3.amazonaws.com/numunenoji/30200861847.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://nunitew.rf.gd/airway_management_devices.pdfIn PDF document text
- http://kagabefusexem.epizy.com/16282490392.pdfIn PDF document text
- https://2489a575-72f7-492f-b117-28cfe4a4d2a3.filesusr.com/ugd/d81705_47d80ed71b0b4591ba3f56d5dbcdfdfe.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/4a9a0899-333d-4568-8297-dfc8d1c6614b/xuzapa.pdfIn PDF document text
- http://maretazijedoval.epizy.com/84713927289.pdfIn PDF document text
- https://c1cb471f-fc5c-4ef2-b3e1-4d0d0d09d135.filesusr.com/ugd/cc5b41_f3f872777e5e441faa4d0543f4300bac.pdf?index=trueIn PDF document text
- https://b1d4f555-1eac-4d61-aa83-27206cf3ee4b.filesusr.com/ugd/1706f5_757adf8d8f87437e87df5f55ed16f0f4.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/8cc6abc2-825c-4a0b-94a3-d69e3cf1521e/hp_deskjet_960c_series_software_downloads.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010918.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10918 | 5360 bytes |
SHA-256: f515c05655827009aaed2d2b6cd406e5510ee66bf5f48382096a928b7a7654c9 |
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font_01_sfnt_off00011b45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B45 | 10488 bytes |
SHA-256: 57790ce8e4021e8052136c1ec1f5e38cc4e960d1901e20373fcfff1fb1319c7a |
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font_02_sfnt_off00013f68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F68 | 16148 bytes |
SHA-256: 98bbda09e34957c2c47eea570891e411fa41ced272e9777bbef021ce7395b75a |
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