MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample contains embedded JavaScript, which is often used to redirect users to malicious websites. Several heuristics indicate the PDF acts as a link farm, pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution lure. The ClamAV detection and ML classifier strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://vydavatelstvoklett.sk/userfiles/file/nixodugapomilif.pdf In PDF document text
- https://bookatowncar.com/userfiles/file/75854494668.pdfIn PDF document text
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/34eee58af13d6f5b248d0db6628eb79c/wopupewevabij.pdfIn PDF document text
- http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/ba3149648e4e8864d95036cd05da94c0/xogubutuk.pdfIn PDF document text
- https://dolmalatrek.com/userfiles/file/80379808823.pdfIn PDF document text
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160d95aff6a844---71749407622.pdfIn PDF document text
- https://ville-saintleonard.fr/pdf/51114894468.pdfIn PDF document text
- https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/554d0c92891c1ee78ff7b8dfdc24d295/15356514101.pdfIn PDF document text
- http://villa-carlshorst.de/sites/default/files/file/353290572.pdfIn PDF document text
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16079683d7e3eb---9328142680.pdfIn PDF document text
- http://allasclub.com/campannas/file/borikakaxoladin.pdfIn PDF document text
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c76cc1e6a---jarulujufinasuruvo.pdfIn PDF document text
- http://traktorpulling.de/ablage/userfiles/files/66697139185.pdfIn PDF document text
- https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/535cca651b07cd9cf1cf3b52039cb07a/8962034380.pdfIn PDF document text
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1608312b6cc2f7---vuwurozixami.pdfIn PDF document text
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb6544d8ec---33156050372.pdfIn PDF document text
- http://daearesort.com/FileData/ckfinder/files/20210702_4625618076BF2824.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160709255f2cef---mitonenogirupofirumugu.pdfIn PDF document text
- https://alnahamgroup.com/userfiles/file/riruru.pdfIn PDF document text
- https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/a1d49ff826ae453b1dc075d02fe61134/rowetiluvusubixuj.pdfIn PDF document text
- https://iwnta.com/userfiles/file/94910881021.pdfIn PDF document text
- http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/kcom55t2nb0luit4kpmrfr3hl3/sumoperanimade.pdfIn PDF document text
- https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/a1e9b904be6279f1b6daf72e115dab29/mofuguwakowa.pdfIn PDF document text
- https://pachetedeturism.ro/images/files/91392079135.pdfIn PDF document text
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/5e37646d469460114d19612750862736/vexaxiditigemeji.pdfIn PDF document text
- https://mdteam.se/ckfinder/userfiles/files/burubedezewuzejepagani.pdfIn PDF document text
- http://gdwtechnology.com/fckeditor/file/jotatab.pdfIn PDF document text
- http://musclecar-taps.com/js/upload/files/muwep.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=simple+or+continuousPDF 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_off0000e420.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE420 | 10548 bytes |
SHA-256: 502cfc0b05665ed5b99c9f170e8b373385bfa69be44ddb27b1c1d929c4420d33 |
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font_01_sfnt_off0000fc12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC12 | 18016 bytes |
SHA-256: e302f662ca9376f086bdb5ae5497b207888bfa60c4e3df2bfeebd636ca859a35 |
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font_02_sfnt_off00012a61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A61 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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