MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also contains numerous external URIs pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the redirection of users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 7
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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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://nomylo.ru/uplcv?utm_term=formalizing+common+sense+pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a074afa9c75---kuwitabobawujojefekoj.pdf
- http://trevelci.ru/ckfinder/userfiles/files/xilezitem.pdf
- http://15449010.com/FileData/ckfinder/files/20210730_EBEBBC79FC5F3E0F.pdf
- http://carroll1975.com/clients/4/4e/4e2b018d07aaa5a30c3e4fca1c7a8df7/File/46338232842.pdf
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a25439688a---guzekidupif.pdf
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/cc5e99096c948814a6502b69c89dbd70/duxelofewenibigudigeja.pdf
- http://csc010.com/userfiles/file/20210724040911_prsgxl.pdf
- http://chatsworth72.com/clients/5/53/532ec3c8dc0e95779814939736d4df6d/File/pegeva.pdf
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/a139292c644f09b5dd56eacc81494882/papobifibinanolukozeze.pdf
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/grh6j6ink6ch3pibentcjpvh29/rolizakibamuzago.pdf
- http://app0.linkeo.it/ckfinder/userfiles/files/fufipejalisimuju.pdf
- http://gyndoktors.de/ckfinder/userfiles/files/37294615336.pdf
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/9948e6b5345d49f5a4229db86f7e0963/kobutakaw.pdf
- http://myapartment.de/web/editor/files/44770709837.pdf
- https://nbtele.com/en/cache/fck_files/file/pujoru.pdf
- http://eschool365.in/js/admin/uploadfiles/file/30161356904.pdf
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/b884f88819086c4acc9b86118fd53e97/49302111449.pdf
- http://mobilni-kadernictvi.cz/files/file/sawuzu.pdf
- http://phutungototuanphat.com/img-tvdl/files/99166158007.pdf
- http://tatugigo.com/ckfinder/userfiles/files/danubojogepasilos.pdf
- http://ducnhua.com/upload/files/xevesenigar.pdf
- http://szamosiszerviz.hu/feltoltott/files/99289660888.pdf
- http://dreamcatcherltd.com/userfiles/file/xarilugetuzeluvudasug.pdf
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160868eaf4271b---38997502460.pdf
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b50669aa1a4---votixoramufugar.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_off00011012.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11012 | 16792 bytes |
font_01_sfnt_off00012829.bin598d9ff4e357b2ced45226de3399b78c7eec648af6427d5b182b2b0f431c51af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12829 | 10904 bytes |
font_02_sfnt_off00014124.binb1c8be4af18f9b89bc41b474db2d4e4a4b3640f068dcfb743db2b92f53daff8a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14124 | 17900 bytes |
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