MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many of which point to disposable hosting and are likely part of a link farm for SEO manipulation or to host phishing content. The ML classifier and ClamAV detection strongly indicate malicious intent, with the PDF being identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 7
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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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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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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://jacksth.ru/123?utm_term=urine+specific+gravity+range+nclex PDF link annotation
- https://cdn-cms.f-static.net/uploads/4402000/normal_5fd6287309313.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481291/normal_5ffaa7355073f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446165/normal_600c09e254239.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4418565/normal_5ff889500ff21.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4487618/normal_5fd338390617d.pdfIn PDF document text
- http://pasasem.iblogger.org/bridge_building_game_for_android_free.pdfIn PDF document text
- https://rebejudan.weebly.com/uploads/1/3/5/3/135316845/952c5d142b.pdfIn PDF document text
- https://fekanarikivokil.weebly.com/uploads/1/3/4/8/134884633/toneke.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4487631/normal_600c9ece338e2.pdfIn PDF document text
- https://fojiwuduz.weebly.com/uploads/1/3/5/3/135309278/semojerojurin-vuduwati-sarumit-jomomaku.pdfIn PDF document text
- https://dafizigupiteg.weebly.com/uploads/1/3/4/4/134492389/8f1b75e35a2d3df.pdfIn PDF document text
- https://makigomeludawuk.weebly.com/uploads/1/3/4/7/134748455/5757838.pdfIn PDF document text
- https://gobalubige.weebly.com/uploads/1/3/5/3/135339343/5dad19424e45591.pdfIn PDF document text
- https://sedarujewajoto.weebly.com/uploads/1/3/0/9/130968957/sapoxas_fobuki_diviramu.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4417037/normal_60067cb4f25f7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369511/normal_6006bca66024c.pdfIn PDF document text
- https://fulojexerewo.weebly.com/uploads/1/3/5/3/135345176/5a10798f2.pdfIn PDF document text
- http://gikadoketu.iblogger.org/rotebipofekuluzisudeponu.pdfIn PDF document text
- https://vezitiratad.weebly.com/uploads/1/3/1/8/131856143/nexiro.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/xonaxevetaf/history_of_native_american_tribes.pdfIn PDF document text
- https://s3.amazonaws.com/vojapu/anonytun_app_apk.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_off000102d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102D9 | 5404 bytes |
SHA-256: be57511d87de6a95b096c15e5df63297103d63d6dfe70ae1746a0116c65d20c3 |
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font_01_sfnt_off00011561.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11561 | 10764 bytes |
SHA-256: 74a99068db7878787458a6720999391698ab1e473f1dd0b2bb36b20c89a8dfe1 |
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