MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The file was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it is a link farm designed to host multiple PDF files. The 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggests the document's purpose is to trick the user into installing a browser extension or update. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://golowaki.ru/wix?keyword=avancemos+2+cuaderno+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4500447/normal_60465d20a5135.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424400/normal_6028a56d01cc5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4505699/normal_60359c92d362f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461744/normal_605e16fa3fbf4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450502/normal_60063a524833a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4452846/normal_60054735112ff.pdfIn PDF document text
- https://cdn.sqhk.co/temirikuji/d9F2ifc/sapasitaboralelewu.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4378845/normal_5fcc1a2378ff8.pdfIn PDF document text
- http://sayseedokg.com/60257290827c5pqe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370768/normal_60605f03b695c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365562/normal_60171684d5b96.pdfIn PDF document text
- http://ita-talia.fun/basics_of_aerothermodynamicsi7d1d.pdfIn PDF document text
- https://cdn.sqhk.co/xokekekav/OnppRja/digital_clock_timer_alarm.pdfIn PDF document text
- https://cdn.sqhk.co/nivavepe/LVvieia/ixl_answer_key_8th_grade_language_arts.pdfIn PDF document text
- https://cdn.sqhk.co/fodexuxefeba/7lA5ghD/jofoxakagevododubiwejuweb.pdfIn PDF document text
- http://1xbet-registr.site/difference_between_conduction_convection_and_radiationhv75v.pdfIn PDF document text
- http://ctuxuu.com/the_book_thief_quotes_about_max40pva.pdfIn PDF document text
- http://app-3null.com/ielts_10_test_1_writing_task_1_model_answeralrgc.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wofaxil/86113816499.pdfIn PDF document text
- https://s3.amazonaws.com/xufoxorog/itunes_64bit_mi_nht_2018.pdfIn PDF document text
- https://s3.amazonaws.com/wewiro/90628118747.pdfIn PDF document text
- https://s3.amazonaws.com/bopuxosavubare/how_to_check_ink_levels_on_brother_mfc_9970cdw.pdfIn PDF document text
- https://s3.amazonaws.com/jipowumat/maravilloso_desastre_saga_cuantos_libros_son.pdfIn PDF document text
- https://s3.amazonaws.com/jivagajamav/sipidedoz.pdfIn PDF document text
- https://s3.amazonaws.com/vibuvomomuv/idiot_s_guide_to_ayurveda.pdfIn PDF document text
- https://s3.amazonaws.com/jaxesabi/abu_garcia_black_max_spinning_reel_line_capacity.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_off0001015c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1015C | 5452 bytes |
SHA-256: 3adf0595cf3d06388546be66b9c36749dd96f08b3db9033dbf9f5f68c04a0b3b |
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font_01_sfnt_off000113dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113DD | 11124 bytes |
SHA-256: dce4a4ab8cdeb5a9868c6976a3dcd07e776ba3c82cb5d495782da9e84c20afb5 |
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