MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it likely exploits a vulnerability or contains malicious content. The heuristics indicate it functions as a link farm, directing users to compromised WordPress upload storage and disposable hosting sites, likely to download further malicious content. The embedded URLs and the nature of the heuristics suggest a phishing or exploit delivery attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609e18764ff5f---32006528792.pdf In PDF document text
- https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/b9ea325d1c6e75cf3f836a04845bd361/6790581778.pdfIn PDF document text
- http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/ne7sv36k3rqiv4jvppd5akg851/4998262477.pdfIn PDF document text
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da24932f2d8---gesugipiloduwetejexiluxo.pdfIn PDF document text
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f266e9d36---92289640957.pdfIn PDF document text
- http://qazaqbanki.kz/data/content/files/momujeje.pdfIn PDF document text
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d33f59cfd64---85930317471.pdfIn PDF document text
- http://guowangcable.com/d/files/nokijutupogorijazumoguvu.pdfIn PDF document text
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607773a7bec57---2328959450.pdfIn PDF document text
- https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612413865a6d0---japafujomovobopo.pdfIn PDF document text
- https://jxloanchien.com/style/postimage/file/55396508117.pdfIn PDF document text
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070b0b35084f---51611367979.pdfIn PDF document text
- http://ei-windykacja.pl/upload/file/jufafalajalulujegulanaf.pdfIn PDF document text
- http://alphasigmaoverseas.com/userfiles/file/zavinodibugosezunemol.pdfIn PDF document text
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/816253dc1ab9ff4ab2100874bc82500e/gufeka.pdfIn PDF document text
- https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/0bf6cb586dbbcf8b07345509806bcd77/vujolulobejejiji.pdfIn PDF document text
- http://spalovnachemolak.sk/userfiles/file/fojiwef.pdfIn PDF document text
- http://lamachine.nl/userfiles/file/mezevawimesidefos.pdfIn PDF document text
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/v2ogs0f1kkvvr5fbel7to9r0gt/samufenoxuvu.pdfIn PDF document text
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077a2808a79b---bavejifaxoxebawelon.pdfIn PDF document text
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/gb8q3rh2gf9tklb1luhqqjr4n5/61778399796.pdfIn PDF document text
- https://pt2-turbo-j3t.com/contents//files/2442941917.pdfIn PDF document text
- http://ristoranteibucanieri.it/userfiles/files/tepakoxarevava.pdfIn PDF document text
- http://speaklifeiamgreatness.com/files/files/lenovedosotanuripa.pdfIn PDF document text
- https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/6fdba3e253e0b7e772d9c2bd8f0567f6/83291575694.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=download+adobe+pdf+reader+for+applePDF 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_off0000c180.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC180 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d997.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD997 | 10360 bytes |
SHA-256: 11b96015b6b0788d6228973db68b2ac5db6a4522d467349c263039644522c4e6 |
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font_02_sfnt_off0000f0e1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0E1 | 16352 bytes |
SHA-256: 7acb65814949372767f600fbdce80ed9384d01ff707a28f93e8349636107ffdf |
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