MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external websites, some hosted on compromised CMS platforms. The presence of numerous links, including one pointing to a WordPress upload directory, suggests an attempt to distribute further malicious content or conduct phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9983
Heuristics 6
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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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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 http://stelmart.ru/userfiles/file/xabanokufusaxa.pdf In PDF document text
- http://fulepmark.hu/nyebu/fulepmark/userfiles/file/topowuvuwepusam.pdfIn PDF document text
- http://djarkitek.com/temp/vinney/HTML/userfiles/file/mivorasakedek.pdfIn PDF document text
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160812d640b134---warojopetalumerebusadix.pdfIn PDF document text
- https://nutritie-metabolism-sanatate.ro/app/webroot/files/userfiles/files/feropulemorepotap.pdfIn PDF document text
- http://smart-ventures.ch/upload/Editor_Images/files/71301065935.pdfIn PDF document text
- http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8005b3f6a---dafavudowiduvuzewaborapak.pdfIn PDF document text
- http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/mokexutobux.pdfIn PDF document text
- https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/2peg925moirhvt71e4e1tleqr6/guxibaramizigusikagutogu.pdfIn PDF document text
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/78aa2861ac374b55de1b8bc428cb922c/27801457382.pdfIn PDF document text
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/1354a84a02e9344ec1c150b36a62ebda/biroweverez.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/av7a3b9d0vfrkan56pf651arf3/19498192900.pdfIn PDF document text
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080585b0844f---17433026372.pdfIn PDF document text
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc45455e1e---firujo.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160c30b9b8cc0e---pijaj.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087bb445c83a---58162195623.pdfIn PDF document text
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607620fa3de5b---40517967714.pdfIn PDF document text
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/cf5340029a080951dcd3c7454311f1b2/domolegupuzezijo.pdfIn PDF document text
- https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/38f9f647d130d84c5dc4f6c8f71d2eeb/menupitikanetemebudetivab.pdfIn PDF document text
- http://redemaisfarma.com/userfiles/file/33511787777.pdfIn PDF document text
- http://doggystylzgrooming.com/admin/photos/file/lulutugevovoxu.pdfIn PDF document text
- http://piemonteforyou.it/userfiles/file/ditutoti.pdfIn PDF document text
- http://www.pharmawell.eu/ckfinder/userfiles/files/5688688361.pdfIn PDF document text
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076e51cc21ef---19431006610.pdfIn PDF document text
- https://oklasik.com/ckfinder/userfiles/files/55034435416.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=hello+neighbor+mod+apk+full+versionPDF link annotation
- 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e0f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0F9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f910.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF910 | 11236 bytes |
SHA-256: 54cf423618a12bcfe038ea12cd7755be2b7cb23c9a042f5ad50a154e8e318d2d |
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font_02_sfnt_off000112b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112B1 | 16668 bytes |
SHA-256: bdca175e42aa50b269f1887a537fe6fa48b71cccda88b0805967dd284933fcfe |
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