MALICIOUS
226
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The PDF file contains a fake CAPTCHA prompt, a common lure to trick users into executing further malicious actions. It also hosts a significant number of external links, many pointing to disposable domains, suggesting a link farm designed to distribute malware or phishing content. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 7
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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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://kuzutuzo.ru/wix?keyword=ucf+dependent+verification+worksheet PDF link annotation
- http://podarokinsta.online/poponkea6j.pdfIn PDF document text
- https://s3.amazonaws.com/dozore/2009_jeep_grand_cherokee_srt8_performance_parts.pdfIn PDF document text
- https://cdn.sqhk.co/sejarepezibo/jgrggic/vr_horror_videos_free_download.pdfIn PDF document text
- https://cdn.sqhk.co/lomokubaf/igvggsb/1010_colorado_street_austin_tx.pdfIn PDF document text
- https://cdn.sqhk.co/tuturuno/liadwhe/52277688699.pdfIn PDF document text
- https://cdn.sqhk.co/tuseliwi/SIicgen/bukusopubatugoxevoxigodiz.pdfIn PDF document text
- https://cdn.sqhk.co/wuvexudid/hjeif8m/octopus_garden_beatles.pdfIn PDF document text
- http://sodaapp.club/ditamemopoxepikugakomezev6su5e.pdfIn PDF document text
- https://cdn.sqhk.co/sewuvavimebi/IfjeMjj/torn_meniscus_surgery_cost_with_insurance.pdfIn PDF document text
- https://cdn.sqhk.co/kixagixupo/iVMmjiI/crossfire_hurricane_song_meaning.pdfIn PDF document text
- https://penoruzeni.weebly.com/uploads/1/3/4/1/134132400/rotolozaroxovetig.pdfIn PDF document text
- http://palikexifumalam.mywebcommunity.org/bamexemeb.pdfIn PDF document text
- http://pakizimavom.scienceontheweb.net/26617775747.pdfIn PDF document text
- http://umkatrade.ru/xuwuvunamewopyh1.pdfIn PDF document text
- https://cdn.sqhk.co/gagobuniponi/8giBdDd/plants_and_animals_worksheets_for_grade_2.pdfIn PDF document text
- http://rafupufubed.mypressonline.com/mind_reading_books_free_download.pdfIn PDF document text
- https://cdn.sqhk.co/dobusalebed/gfpogj9/42474307580.pdfIn PDF document text
- https://cdn.sqhk.co/gogefaman/bgdijge/pocket_racing_guide_kiwami.pdfIn PDF document text
- https://vuzigalami.weebly.com/uploads/1/3/5/9/135960382/dfcf5cd0b.pdfIn PDF document text
- https://s3.amazonaws.com/zurovajij/mosobi.pdfIn PDF document text
- http://bazunujovi.scienceontheweb.net/the_beatles_complete_chord_songbook_hal_leonard.pdfIn PDF document text
- https://s3.amazonaws.com/figidireki/94249853507.pdfIn PDF document text
- http://rabizepafuxonag.mypressonline.com/physical_science_textbook_grade_9.pdfIn PDF document text
- https://wavupuzubeje.weebly.com/uploads/1/3/4/2/134235525/vigujegu_rebuze.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000fdcd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDCD | 5416 bytes |
SHA-256: 81628eac31c614d45de09dc0ce3509d902d056135bc6fb1275c80fe02305282d |
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font_01_sfnt_off00011058.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11058 | 10664 bytes |
SHA-256: 44a65ec8d0e0751390a567b41a2fa22fffc41d367baf8974c5b8f978852d76d5 |
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