MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document exhibits characteristics of a remote support tool lure, instructing the user to install or connect with such software. Numerous embedded URLs point to various PDF files hosted on compromised or disposable domains, suggesting a distribution mechanism for malicious payloads. The ML classifier strongly indicates maliciousness, and the presence of multiple external links supports a phishing or social engineering attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 6
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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://drafthe.ru/uplcv?utm_term=teamviewer+android+app+download
- http://splogservice.ru/content/file/17807843924.pdf
- https://laatjehuisweerstralen.nl/upload/file/84059222523.pdf
- http://testplanet.nl/uploads/files/popug.pdf
- http://omonetach.pl/foto/ilustracje/file/42625721584.pdf
- http://dulichtantai.com/files/uploaded/files/23748773490.pdf
- http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/fb32bde8256711805e093428fd272496/35846683329.pdf
- https://suativisamsungtaihanoi.net/upload/files/97911793332.pdf
- http://www.cenlaenvironmental.com/siteuploads/editorimg/file/rorinamoxab.pdf
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/161466f78b8c59---93735825598.pdf
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613d20321eb09---94321398037.pdf
- https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614113cf3c7b1---7452811565.pdf
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16145e827049c7---rusinazibazaridede.pdf
- https://www.tyrtaios.gr/ckfinder/userfiles/files/dawunarejo.pdf
- http://cosonhuath.com/hinhanh_fckeditor/file/fesokotedelorupagefikuvef.pdf
- http://osmed.cz/app/webroot/files/files/xavevizivuro.pdf
- http://quaisetoiles.fr/img_pages/file/89983939755.pdf
- http://uceng.net/_UploadFile/Images/file/79445250325.pdf
- http://denetimmusavirlik.com/userfiles/file/fikosomogujepanepefofo.pdf
- https://giyimkent.formenemlak.com/upload/ckfinder/files/kafejoneniberosisanov.pdf
- https://inprovitargentina.com/ckfinder/userfiles/files/komajopudalodize.pdf
- http://cnkls.com/userfiles/file/1631791786.pdf
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/2fee6ad784574a6199f3e7cb27977c81/xifezowujopapelepen.pdf
- https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16146f5394306b---tusodek.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b462.binff5789cbe96dce161a2695f96d666337f401cbf674096fbb1713841c210f1697 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB462 | 17432 bytes |
font_01_sfnt_off0000e084.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE084 | 16792 bytes |
font_02_sfnt_off0000f89b.bina4f120dcedf33507eaa6efad56ecc669f52e02721fcbdf62e09d577b830af118 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF89B | 10400 bytes |
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