MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.001 PowerShell
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains heuristics indicating it's a link farm and a lure to execute commands via the clipboard. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a URL that appears to be a lure for 'create bootable usb mac disk utility el capitan'. The presence of a clipboard command lure suggests an attempt to trick the user into executing arbitrary commands, likely to download and run a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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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://medvor.ru/pbw?utm_term=create+bootable+usb+mac+disk+utility+el+capitan PDF link annotation
- https://nuresoxak.weebly.com/uploads/1/3/1/3/131380504/c4b4ebfad4dbd.pdfIn PDF document text
- https://digavonuvuveg.weebly.com/uploads/1/3/4/8/134851043/gululatipuladokal.pdfIn PDF document text
- https://batigagonu.weebly.com/uploads/1/3/4/7/134774980/8995995.pdfIn PDF document text
- https://lubikumak.weebly.com/uploads/1/3/1/4/131453733/85a2a36d3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420747/normal_603655a7ab70e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4474723/normal_5fc7cb1e4c23e.pdfIn PDF document text
- https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/d838f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://suniger.pbworks.com/f/zumdahl_chemistry_9th_edition_answers.pdfIn PDF document text
- http://lufokomarib.pbworks.com/w/file/fetch/144477843/makkar_ielts_writing_task_2_2021_with_answers.pdfIn PDF document text
- http://wejojixi.pbworks.com/f/passive_voice_past_continuous_tense_exercises.pdfIn PDF document text
- http://sovafiben.pbworks.com/f/angular_2_tutorial_for_beginners.pdfIn PDF document text
- http://zevatirupura.pbworks.com/w/file/fetch/144585969/lumakiwuguzesewosafi.pdfIn PDF document text
- http://puxivir.pbworks.com/f/lawewatemuwamuvusumep.pdfIn PDF document text
- http://sepaxebi.pbworks.com/w/file/fetch/144413406/32757392872.pdfIn PDF document text
- http://kufujibumufa.pbworks.com/w/file/fetch/144411645/how_to_connect_vizio_wireless_sound_bar.pdfIn PDF document text
- http://mogulazedub.pbworks.com/f/82967996490.pdfIn PDF document text
- http://negovijalulu.pbworks.com/w/file/fetch/144412809/79771687594.pdfIn PDF document text
- http://sutodoromar.pbworks.com/f/89914627747.pdfIn PDF document text
- http://nubuzefi.pbworks.com/f/povirinimotaboba.pdfIn PDF document text
- http://mifimoruzuwo.pbworks.com/w/file/fetch/144451602/how_to_reset_code_on_hotel_safe.pdfIn PDF document text
- http://xuruzinijub.pbworks.com/w/file/fetch/144423816/kizubodoxeb.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e4c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4C7 | 74360 bytes |
SHA-256: 390789e3408c860850ec16f8eb0e02a73108775ebb4379daecad4a160c6e1576 |
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font_01_sfnt_off0001bf03.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1BF03 | 5432 bytes |
SHA-256: 3d7bf027174019451f7e049d16ba145a3247ce3ecbfab9f58e715b060be702fa |
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font_02_sfnt_off0001d161.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D161 | 10168 bytes |
SHA-256: 43bfa0ecaa25e58f1263c5ec38e1e317dcef70213f33fb43a66e2edbeeb01831 |
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font_03_sfnt_off0001f489.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F489 | 16092 bytes |
SHA-256: b5f0b32f6543351256b73815f81a040120bd033010e1d2e1258d4bc00aa53fb6 |
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