MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One URL, 'https://kuzutuzo.ru/award?keyword=negative+prefixes+activities+pdf', is particularly suspicious and likely leads to a phishing or malware distribution site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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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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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/award?keyword=negative+prefixes+activities+pdf PDF link annotation
- http://rastet-malysh.ru/kundli_software_free_filehippoz9h7e.pdfIn PDF document text
- https://cdn.sqhk.co/ninoporaleva/hfIgjPB/2090228687.pdfIn PDF document text
- https://cdn.sqhk.co/nowovadizeb/hds5gdd/90670363820.pdfIn PDF document text
- http://rimka.xyz/saxon_math_course_2_download8xbr6.pdfIn PDF document text
- https://cdn.sqhk.co/kewawukufiju/jhjigh4/16411237365.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://0778d94d-b67d-49c3-8f6f-43f52d6edec9.filesusr.com/ugd/b85eb0_305c06d4d4db45cf8841d9125a1426e7.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/dc39aad2-d1c9-48ed-8f20-187771b3d524/xuramodimuvikoxetawovodo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a397a9e1-ab0f-4827-93bf-6bf46d37bf2f/wixadurebeg.pdfIn PDF document text
- https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_26459597598e4ca68cd6fbdf3ac8d504.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/9af6f5db-6e06-451b-9ac0-ea5b1fb57540/diferentes_tipos_de_fichas_bibliogrficas.pdfIn PDF document text
- https://11ca5eb4-0abe-4d5d-8073-3f36f6088e80.filesusr.com/ugd/8b62d8_08e131b56a04447b93d258a9a5105618.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/bd3d53a3-33e1-48cf-9376-c70f92f0e189/xitudilu.pdfIn PDF document text
- https://f1e11ea9-a931-46ad-af30-391325c877dd.filesusr.com/ugd/423518_e3a0ea7896dc489aaf877efe3e0340d3.pdf?index=trueIn PDF document text
- https://3edbbcf3-b5b1-446e-9630-835d38fa79e0.filesusr.com/ugd/6908d7_3cee3dba936045bfa2547c0524721b9b.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/8864da2e-18a6-4c34-b411-1cb935332479/dwayne_johnson_daughter_age.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bbad5327-2366-4f37-a604-a69c03eeb615/s_l_ross_differential_equations_solutions_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3aae0106-ba75-4ca5-b88d-592bc73deaa3/32034307114.pdfIn PDF document text
- https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_5f64ec99f11642beadc52ff5c77d0b44.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_off0000de20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE20 | 5388 bytes |
SHA-256: 701f3013cada9ca67f3c767796592da3b46adc35ddb22cc7b5d70adfd8dd74fd |
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font_01_sfnt_off0000f09d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF09D | 10920 bytes |
SHA-256: 3cc58884e80ea0664a683130668fa686ce61d79fb0c38244caef046bdd59b56d |
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