MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm or phishing lure. The presence of a 'download button' heuristic further supports a social engineering attack. While no scripts were explicitly extracted, the PDF structure and link farm behavior are consistent with techniques used to deliver second-stage payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9886
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://synerhu.ru/uplcv?utm_term=free+goal+tracking+thermometer+template
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160ff583eb1351---50397019780.pdf
- http://sgo-bage.com/public/files/files/32942555794.pdf
- https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5a71b3e49---dowodisufob.pdf
- https://bodymason.com/user_uploads/files/dopegitomesoba.pdf
- http://kopdesign.nl/userfiles/file/61639189491.pdf
- https://aluminiosarla.com/userfiles_arla/files/5062322957.pdf
- http://classtool.info/upload/files/malabidoje.pdf
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/vruigb5tlfauppqnmg1adaak53/29707821870.pdf
- https://marblobathware.com/app/webroot/img/files/xiwinewawul.pdf
- http://axwelindia.com/uploads/41046498116.pdf
- http://robalton.es/Albums/images/file///94943914608.pdf
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887ade20978---juzuribebijojukaguzifexo.pdf
- http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/fij9a3mjg468l8lg4rvullivt6/88023911283.pdf
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/abf77ad9c6921d32460ba1e3ca6c1c28/64791069713.pdf
- https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160b45ccaa9372---59207464138.pdf
- http://becskeicsodajo.hu/admin/fck_upload/file/82264097932.pdf
- http://cokhihoaiduc.com/uploads/files/nuvusuvikedil.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/724c11bf58908cf0ace61d6badeb3eaa/50760233452.pdf
- http://expertcomptablecourreges.fr/michel_courreges/userfiles/file/rotipibulilafuroguwibit.pdf
- https://kfmaccounting.com/webroot/img/content/files/bokowemekufebivejako.pdf
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a64224f4f---42218047182.pdf
- http://evolutionchonburi.com/userfiles/files/78892195045.pdf
- http://superpart.com/files/12677210952.pdf
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d80e98b5c8---11691083894.pdf
- http://rickgrisolia.com/userfiles/files/25582009218.pdf
- https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/36770a6964223ae6225a8578af716339/83976554519.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_off0000efec.bincfd7f6da133dbd7e3207a2c479c30931ad27191f38e6f1f15030a0379319c966 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFEC | 10720 bytes |
font_01_sfnt_off00010844.bin8ab073b50a22165d657646805403458e092c6218adb7352db88b3aa2db5ac9a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10844 | 17908 bytes |
font_02_sfnt_off00013743.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13743 | 16792 bytes |
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