MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains numerous links to external websites, many of which host other PDF files, suggesting a link farm or redirection mechanism. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number for support or to resolve a fake issue. While no scripts were directly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards a malicious phishing or scam attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/c8a74ae2d4d6d3d1f246f03dfad27cc3/kesuzusazeraba.pdf
- https://aglogistics-bo.net/userfiles/file/25335585224.pdf
- http://appli-veolia.net/ckfinder/userfiles/files/natenebodezofi.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16136b782150fb---94152194991.pdf
- http://basar-hemeringen.de/ablage/userfiles/files/gezaledoredojavifomov.pdf
- http://stowarzyszeniemalyksiaze.eu/img/upload/files/18714169408.pdf
- https://www.afoa.org.ar/backend/ckfinder/userfiles/files/93041918023.pdf
- https://phunhai.net/upload/files/28997167157.pdf
- https://la-klamm.org/Files/files/disomuvubiba.pdf
- https://skillmapmagazine.com/ckfinder/userfiles/files/ledefukufuzulovazugunovor.pdf
- http://krr-nfe.com/suratnfe/UserFiles/File/24661454983.pdf
- http://moscowballet.ru/userfiles/file/97386882305.pdf
- http://tianfonmm.com/d/files/biwixunumonupupemuxugur.pdf
- https://metnar.pl/web/uploads/files/60602750661.pdf
- http://elpijisystem.com/file/vomenowilu.pdf
- http://perfekt-dom.pl/designhome/admin/userfiles/file/1278389342.pdf
- http://bigbazar.cz/is/images/FCKeditor/File/18435097806.pdf
- http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161312d8978ce0---peninipoma.pdf
- http://hytechplus.com/userfiles/file/sewabude.pdf
- http://kxxbs.com/uploadfiles/file/a/novigiwumo.pdf
- http://conganbacgiang.vn/app/webroot/uploads/files/16718104367.pdf
- http://www.como-grup.ro/fisiere/file/satimumegowujaj.pdf
- http://abw10thstreetne.com/uploads/files/17520254550.pdf
- http://hocomesun.com/upload/wozususokeloribor.pdf
- http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/18344852302.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=rndis+driver+usb+tethering+windows+xp
- http://perfecturology.cafe24.com/upload/editor/imagefile/31865531161.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_off0000ea58.bin1307dab7d8464a247af86e1debd24525c2c9edba3829fff953f5e128b8560a4a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA58 | 11000 bytes |
font_01_sfnt_off00010385.bin27dbab43bd4e67f8baa399635ce3604f88b589424e047c5ecf0a886cbdebfef6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10385 | 19448 bytes |
font_02_sfnt_off0001365e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1365E | 16792 bytes |
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