MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF was flagged by ML and ClamAV as malicious, with heuristics indicating it functions as a link farm on disposable hosting. The presence of 'powershell_start_ssh-agentmb5ta.pdf' in the document text suggests an attempt to execute commands, likely to download and run a second-stage payload from one of the numerous embedded URLs. The document body itself is heavily obfuscated and unreadable, providing no direct user-facing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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://dafemum.ru/strik?utm_term=3+point+perspective+drawing+interior PDF link annotation
- https://cdn-cms.f-static.net/uploads/4380539/normal_603149d21efe0.pdfIn PDF document text
- http://vipmanmarket.space/campoformido_udine_corrieralmter.pdfIn PDF document text
- http://datab.vip/libro_assassins_creed_forsaken_espaol01h18.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489247/normal_60356d1632917.pdfIn PDF document text
- http://merexazumebenag.medianewsonline.com/83924530281.pdfIn PDF document text
- http://duplicwcnj.space/jitirafimiv02n.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366015/normal_601c5fcf8968a.pdfIn PDF document text
- http://sevezor.scienceontheweb.net/woduvapomameved.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450731/normal_5fda2dff38cc9.pdfIn PDF document text
- http://zimesajigikizup.22web.org/75033478501.pdfIn PDF document text
- http://metarapuw.mypressonline.com/accountancy_class_12_short_notes.pdfIn PDF document text
- http://nickned.me/funcion_indirecto_vbav5ohg.pdfIn PDF document text
- http://gratoramaa.space/what_is_a_police_personal_history_statement78wpf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4389601/normal_6002260a137c4.pdfIn PDF document text
- http://kapusta.pro/birthday_cake_image_app0zz8g.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447267/normal_602b9b24edb7e.pdfIn PDF document text
- http://b4shop.icu/50862892149klzt4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417033/normal_60156cdb2c6e0.pdfIn PDF document text
- http://basvuruizleme.online/windows_powershell_start_ssh-agentmb5ta.pdfIn PDF document text
- http://outputqwvk.space/vimumixixopokabetojenasoglf5d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://gaxezakowe.epizy.com/prebisch_capitalismo_periferico.pdfIn PDF document text
- http://mewabetowa.myartsonline.com/88087826838.pdfIn PDF document text
- http://favilogas.rf.gd/2013_home_economics_leaving_cert_answers.pdfIn PDF document text
- http://bigapenegig.atwebpages.com/how_to_clean_the_ionic_pro_air_purifier.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_off0000ffc4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFC4 | 5428 bytes |
SHA-256: 845479700559df893dbfc36b9378c09f01ead2c01a3005baa075d4739577d5f5 |
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font_01_sfnt_off0001125c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1125C | 10832 bytes |
SHA-256: 4b3a8872ad53c666341fdd708a509e6131c71f1d015d7010e64cfef7f93153a0 |
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