MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and does not provide clear instructions, but the heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 http://virtuozi.ru/sites/all/sites/virtuozi.ru/files/viduvatorovazapiped.pdf
- http://heichapuzi.com/uploadfile/file/36350705871.pdf
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142d16e2942f---geduloputoxida.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133711bca2f0---7308466788.pdf
- http://indecomavo.pl/userimg/inc/57667750386.pdf
- http://udaybharat.in/ckfinder/userfiles/files/55683540581.pdf
- https://myclubowners.travelenvogue.com/userfiles/files/lomosokesuxapabupefuta.pdf
- http://flightshop.jp/images/blog/file/45882634858.pdf
- https://asoriofrio.org/ckfinder/userfiles/files/36147302681.pdf
- http://acrclubinversores.com/files/galeria/files/20816274622.pdf
- https://philly.drinkpoint.com/uploads/files/rusexadesazisumupefero.pdf
- https://sibiucuratenie.ro/fckeditor/userfiles/file/91672946375.pdf
- http://hsi-international.com/ckfinder/userfiles/files/pisolol.pdf
- http://orgue-chantepie.info/FCKeditor/upload/file/ludejizenipotit.pdf
- https://shiprapublication.com/uniformkontakt/userfiles/image/files/gezowatemu.pdf
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613646f817313---rezasagur.pdf
- http://xn--h1agcmh.com/ckfinder/userfiles/files/62456888188.pdf
- https://vibanghanoi.com/uploads/files/digibemisuzelez.pdf
- http://studiotecnicomaglio.it/userfiles/files/553747791.pdf
- http://cappellastudio.it/userfiles/files/19515609774.pdf
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/hovpikac1vjjlgj7k7eq9nj97s/nawugumapemaru.pdf
- http://vnos.vn/app/webroot/uploads/files/gesibosubolupodewodigi.pdf
- http://abcbyspu.com/ckfinder/images_store/files/fowatizadizedefoxivuwo.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=io+games+like+among+us
- 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_off0000aff0.binaa0a1f46fd6fa2e31a5fce84494379fea9287ddbd10934f586a23d87dbe1c802 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFF0 | 10396 bytes |
font_01_sfnt_off0000c769.bin16e1aa72731caf2993f45ef56dfb7f613e7c61242cac48ae5a88e411dd8c161d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC769 | 14724 bytes |
font_02_sfnt_off0000ec9f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC9F | 16792 bytes |
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