MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs pointing to various websites, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest this document's purpose is to act as a link farm. The ML classifier and ClamAV detection further support its malicious nature, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9761
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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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://medvor.ru/uplcv?utm_term=don+quijote+sancho
- https://masini-de-ambalat.ro/images/userfiles/xivalowifujutuxupeguw.pdf
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd62aafe42---juwowo.pdf
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609684dc9f430---mizugajozabe.pdf
- http://quickvideo.nl/userfiles/file/31387069463.pdf
- https://www.nuyew.academy/wp-content/plugins/super-forms/uploads/php/files/34a73ac7caa08329b03320a7d8c2ded1/5961932766.pdf
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/34040f5dc8257a77ffa2a9b4a005011c/94521462889.pdf
- http://denki-shonan.com/uploadsfile/nabotikaxibewo.pdf
- http://biosurfest.com/userfiles/files/1824709682.pdf
- http://winso.tw/userfiles/file/bijibowuwu.pdf
- http://shiksha24.com/userfiles/files/64343212158.pdf
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ac9499970---zofekesi.pdf
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/04cd4b03004bb383b5aae07499597143/dizofediwemabusavijup.pdf
- http://uceng.net/_UploadFile/Images/file/wirim.pdf
- https://digireg.cz/upload/lubumazokop.pdf
- http://at2apigroup3.com/contents//files/26892516917.pdf
- http://aliglobshop.com/userfiles/file/91616995655.pdf
- https://albawadiroad.com/userfiles/files/7443910671.pdf
- http://guanzhuli.com/userfiles/file/gelubusavubarakeretenu.pdf
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1482dce386---gufugukozopusobomuren.pdf
- http://allprintusa.com/admin/images/file/38683155154.pdf
- https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160872a98457b9---sogefazuguzef.pdf
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5b3666788---mudojeporezogorodovom.pdf
- https://transport-vehicules.fr/userfiles/file/roloji.pdf
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078974ec8bea---jazemalaxodotanuxazuluva.pdf
- https://khabul.mn/mmpa/userfiles/files/giluka.pdf
- http://henca.com/files/details/file/xakepina.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_off0001f7e6.bin36d61f38a5ddd7b3e84312080d11b57fa42c35be52d09522578383e3846543a1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F7E6 | 10556 bytes |
font_01_sfnt_off00020fe4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x20FE4 | 16792 bytes |
font_02_sfnt_off000227f6.bine2887f903b018f167828667177d25fb5c245eb11ecf4a03631ed647cd3ea6f6a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x227F6 | 18312 bytes |
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