MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are used in a link farm. The ML classifier and ClamAV detection strongly indicate maliciousness, specifically a phishing lure impersonating the brand 'Apple'. The primary malicious URL identified is https://kuzutuzo.ru/strik?utm_term=is+sea+of+thieves+on+mac, which is used to redirect users, likely for credential harvesting.
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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Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://kuzutuzo.ru/strik?utm_term=is+sea+of+thieves+on+mac.
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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/strik?utm_term=is+sea+of+thieves+on+mac PDF link annotation
- http://xiletunekukine.iblogger.org/baseball_uniforms_team_packs.pdfIn PDF document text
- http://viwuvomax.iblogger.org/calorific_value_fuels.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/4bf743bd-ec9a-457f-a192-5d8f0076b733/northouse_leadership_8th_edition.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9a2f4602-b583-47ac-a16c-92087f9e0db9/98857817863.pdfIn PDF document text
- http://pudubekij.epizy.com/4743803572.pdfIn PDF document text
- https://s3.amazonaws.com/dumupa/brother_hl_2240_reset_drum_counter.pdfIn PDF document text
- http://wipovevoliku.epizy.com/acoustic_guitar_beginners_guide.pdfIn PDF document text
- http://tinanatibora.rf.gd/risk_assessment_meaning_in_information_technology.pdfIn PDF document text
- http://pivomowofafo.rf.gd/64783358399.pdfIn PDF document text
- http://teveniwavabubak.rf.gd/presto_6_quart_electric_pressure_cooker_manual.pdfIn PDF document text
- http://worurekebisur.rf.gd/cerebrovascular_disease_2017.pdfIn PDF document text
- http://pajamenu.rf.gd/puzupawarupafateritufa.pdfIn PDF document text
- https://s3.amazonaws.com/dezajok/jeresotejuxiga.pdfIn PDF document text
- https://s3.amazonaws.com/fedojigudaj/angularjs_version_6.pdfIn PDF document text
- http://jilawovo.epizy.com/free_house_building_plans.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/deff0ef2-7c2b-455e-86d2-9820348b7fdc/lowes_troy_bilt_riding_mower_parts.pdfIn PDF document text
- http://zofimidenilasa.rf.gd/bodysuit_pattern.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f1ce320d-7483-44ef-8f86-79a2a7a5aaed/2000_jeep_grand_cherokee_under_hood_fuse_box_diagram.pdfIn PDF document text
- http://gonidiwofove.epizy.com/kobujujanemagukozu.pdfIn PDF document text
- https://s3.amazonaws.com/satedafadusizo/what_is_the_remote_code_for_a_sansui_tv.pdfIn PDF document text
- http://nexoluximil.rf.gd/el_pequeo_vampiro_en_peligro_para_descargar.pdfIn PDF document text
- https://s3.amazonaws.com/nerugiraxura/rewabadudumefozemijo.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_off0002589b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2589B | 4988 bytes |
SHA-256: 866d7db226a0923fb37e201c551cb3e300dbf1820d4283b2c82814db7337dd9a |
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font_01_sfnt_off0002697d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2697D | 12448 bytes |
SHA-256: 21ac1d26107acabc5ec6398d98abeb54407680a032a80dd0335a4b77577442f9 |
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