MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, pointing to numerous PDF files hosted on various domains, some of which appear to be compromised WordPress sites. The presence of 'utm_term' parameters suggests a phishing or SEO manipulation tactic to drive traffic to these malicious links. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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=it+chapter+two+movie+download+filmyzilla PDF link annotation
- https://citronel.com/userfiles/files/puxuxapaxesujetesezefo.pdfIn PDF document text
- https://stl-log.com/htdocs/cljr/data/files/31977312670.pdfIn PDF document text
- http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/gedisizal.pdfIn PDF document text
- http://veoguidecostarica.com/ci/userfiles/files/55091915850.pdfIn PDF document text
- http://apisicul.com/userfiles/files/79493550648.pdfIn PDF document text
- https://brillimet.com/uploads/files/202109081644082542.pdfIn PDF document text
- http://thietbimaugiao.vn/Images_upload/files/72194889393.pdfIn PDF document text
- https://xn--z4qq44i.tw/upload/actfiles/xovatevojujububuwexefo.pdfIn PDF document text
- https://shopinhome.com/ci/userfiles/files/1011841755.pdfIn PDF document text
- http://vividconcept.in/userfiles/file/80652610818.pdfIn PDF document text
- http://lobi.md/userfiles/file/reboxeduzubosilemopozor.pdfIn PDF document text
- http://arunimaflavours.com/userfiles/file/3271841045.pdfIn PDF document text
- https://radekslodkiewicz.pl/files/file/35328591350.pdfIn PDF document text
- http://cppzone.ru/users/blogs/file/towede.pdfIn PDF document text
- http://safiorida.dk/operatori/userfiles/file/subatuluxe.pdfIn PDF document text
- http://matonaklawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nufefukutitelanotesimax.pdfIn PDF document text
- http://steelfurniturecn.com/d/files/gilobizogebebix.pdfIn PDF document text
- https://premiersuli.hu/files/files/gitez.pdfIn PDF document text
- https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/7a5bde1a4161e8fa5d95219b9843578a/83303328076.pdfIn PDF document text
- http://ufcnagykanizsa.hu/userfiles/file/25105012578.pdfIn PDF document text
- http://tecniagua.es/uploads/ckfinder/files/wimoneveribibalavaribu.pdfIn PDF document text
- http://www.miyadenthai.com/image/upload/File/72372455973.pdfIn PDF document text
- http://alles-vom-schreiner.de/userfiles/file/zusulu.pdfIn PDF document text
- http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140950066630---zewurolog.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16143a4db3d611---65908313699.pdfIn 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_off0000c5ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5EF | 10992 bytes |
SHA-256: 17859e6f17d5d6e8832d75972473ac4aefc656476629c637dbfbbe183f3cf7bb |
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font_01_sfnt_off0000df62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF62 | 17552 bytes |
SHA-256: e17f1fa8cfa0ebd5c2bf13da5076771b69e36abcf8be97ab230167e785ca37bf |
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font_02_sfnt_off00010c3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C3D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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