MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains a link farm hosted on compromised WordPress infrastructure, with one URL pointing to a PDF file on bergfin.se. The presence of multiple external URIs and the link farm structure suggest an attempt to lure users to malicious or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/16141e23d10617---61965315946.pdf In PDF document text
- http://jumpstart.mobi/userfiles/file/18773678882.pdfIn PDF document text
- http://studioingegneramato.com/userfiles/files/genojuzapebaluwoguvizizab.pdfIn PDF document text
- http://xn--42-jlclgg6a3e.xn--p1ai/userfiles/file/75197869287.pdfIn PDF document text
- https://brothers-music.com/ckfinder/userfiles/files/gezujoxel.pdfIn PDF document text
- https://specialgarden.ro/userfiles/file/doleronudifadulaxawowigu.pdfIn PDF document text
- http://studiolaviano.it/userfiles/files/45120836907.pdfIn PDF document text
- http://kadh.kr/bobod/upload/file/lesapovegebosusakelegakom.pdfIn PDF document text
- http://digitalqwerty.com/ckfinder/userfiles/files/25263047104.pdfIn PDF document text
- http://odnoklassniki-files.ru/images/uploads/files/47074481672.pdfIn PDF document text
- http://ratchadatitan.com/UserFiles/File/96681022013.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/a8bkkav4t7ns01hjti65gopiq7/6101770301.pdfIn PDF document text
- https://cafesca.org/ckfinder/userfiles/files/28991964698.pdfIn PDF document text
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1612f2a75a9dcc---91855692606.pdfIn PDF document text
- https://channeloflove.com/ckfinder/userfiles/files/89724776711.pdfIn PDF document text
- http://nitexprofi.cz/userfiles/file/14602130532.pdfIn PDF document text
- https://aldurra.ly/images-editeur/img/file/98983142025.pdfIn PDF document text
- https://coil.hk/upload/files/47607346151.pdfIn PDF document text
- http://www.almansori-ye.com/almansorifiles/files/92587741025.pdfIn PDF document text
- http://silverk.ru/img/lib/file/gewimewedagutizegu.pdfIn PDF document text
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/per65trngeo9d3ii6ihoh7thh6/fijidom.pdfIn PDF document text
- http://www.bc-arman.kz/ckfinder/userfiles/files/29114474503.pdfIn PDF document text
- http://linkipt.com/_UploadEditor/files/wusedasogexetolori.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=the+thing+around+your+neck+free+pdfPDF link annotation
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c1e53a613---romolesodalijalaf.pdfIn PDF document text
- 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_off0000b403.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB403 | 17376 bytes |
SHA-256: 510fba4d1aaed81e4bad68237003d1aa269b51d9b573368575579653ca0894ec |
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font_01_sfnt_off0000e03e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE03E | 10952 bytes |
SHA-256: 50400ac7d029135be3e0ab63e47d46f2602216f31ab8a088506a2a40345cfe9f |
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font_02_sfnt_off0000f972.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF972 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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