MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by heuristics as a link farm and a potential phishing/malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary malicious URL identified is https://jottigo.ru/award?keyword=liebeck+a+concise+introduction+to+pure+mathematics+pdf, which is likely used to redirect the user to a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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 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://jottigo.ru/award?keyword=liebeck+a+concise+introduction+to+pure+mathematics+pdf PDF link annotation
- https://cdn.sqhk.co/jixifarit/adihdgi/wwe_crown_jewel_review_bleacher_report.pdfIn PDF document text
- http://xijivedijimidip.mygamesonline.org/vinenubufiwebego.pdfIn PDF document text
- http://madawuboso.sportsontheweb.net/general_aptitude_questions_with_answers_download.pdfIn PDF document text
- https://cdn.sqhk.co/xuxovunevo/CXhawon/alien_isolation_mission_5_keycard.pdfIn PDF document text
- http://hookup754.fun/troy_bilt_tb22_fuel_line_diagramzs3qh.pdfIn PDF document text
- http://gebigulexejo.sportsontheweb.net/zasirerivavamadazobusa.pdfIn PDF document text
- http://apsmall.space/44531060804jcswo.pdfIn PDF document text
- http://sluzhba1.net/kewofituwuvepitomugind76aa.pdfIn PDF document text
- http://legko.travel/kebufewaragugulo5zhd7.pdfIn PDF document text
- https://cdn.sqhk.co/merojuniv/oihjcFT/boo_at_the_zoo_bronx_zoo_map.pdfIn PDF document text
- http://sunshop.pro/medidas_cautelares_innovativas_peru4rra7.pdfIn PDF document text
- https://cdn.sqhk.co/fukonovum/ihmksii/fox_sports_mexico_schedule.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/1ca94be9-c3ae-4ea7-a201-0c244b480d79/xibukebugefotuxudu.pdfIn PDF document text
- https://bf5f3f24-cfb9-4aec-9f01-83e6d863dc5b.filesusr.com/ugd/1f4526_4afe29cb70c24e188eb7eae0157d0781.pdf?index=trueIn PDF document text
- https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_39778bbe737f40099900b8a96991b6fc.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/ccb9b928-a3c8-42aa-b66d-277dff4a1486/what_is_a_uk_double_treble_crochet_stitch.pdfIn PDF document text
- http://japinoxizidunub.myartsonline.com/foxaminekev.pdfIn PDF document text
- https://203e7bc3-08d7-4ecc-a8df-f797e0d4a079.filesusr.com/ugd/d4579c_9187ad55583e40248fe8376aaad64071.pdf?index=trueIn PDF document text
- https://7f06b679-e14d-4525-8955-d56a7cf6f710.filesusr.com/ugd/79e5df_95090e46931549219247e80fbd84adb9.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/3f1f6c90-a433-40cc-a76f-437772b28212/fafulipazejujimena.pdfIn PDF document text
- https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_3ed0c3de81c44ccfbe72ed48808aef09.pdf?index=trueIn PDF document text
- https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_56097d88ff2f4668b8d4a5453013b16c.pdf?index=trueIn PDF document text
- https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_1ed9bcb671094bcd8aaae638832a1b7b.pdf?index=trueIn 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_off0000e594.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE594 | 5508 bytes |
SHA-256: 62f60adead6dc0c352751c939d9a10da5bf905a8be5af4f6f75795018f45414f |
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font_01_sfnt_off0000f828.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF828 | 11772 bytes |
SHA-256: 7bac3453994219e519de58fb4579f22b532ba3eb17f2a32f6f5f6adab7e915f6 |
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