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 is part of a link farm, with many URLs pointing to potentially compromised or disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://netcsemege.hu/ckfinder/userfiles/files/gejusinisenimep.pdf
- http://www.sport-konyv.hu/userfiles/file/91974268121.pdf
- https://ldcpc.com/ckfinder/userfiles/files/72043610422.pdf
- https://isleo.com/i_photos/file/95758125226.pdf
- http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/4ef5734b9f113a6f9ed7140f289d17f5/kigos.pdf
- http://dailycan.com/userfiles/files/13534796049.pdf
- http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/37251752620.pdf
- https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/f181038662055878951490f99d3972c8/jejuzirinixowid.pdf
- https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0bf74c582c---duzavafatavepujadaz.pdf
- https://traiteur-troyes-mariage-buffet-aube-10.blaisot-traiteur.fr/ckfinder/userfiles/files/sezuvideragogar.pdf
- https://k-newsletter.com/ckupload/files/22800557228.pdf
- http://ieeepes-thailand.org/app/webroot/files/files/17418970943.pdf
- http://kup-vino.cz/web/ckfinder/userfiles/files/69441112882.pdf
- http://bona-agra.pl/Upload/file/32294311872.pdf
- http://mariamozharova.ru/uploads/files/90888789392.pdf
- http://hotspot-usa.com/js/upload/files/wigonekikup.pdf
- https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/4a2s78oislg0raj9p9n835uq50/89389686755.pdf
- http://www.empresshasnoclothes.com/siteuploads/editorimg/file/zigadexuduvevokofabiso.pdf
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3db05ac4e---27058543060.pdf
- http://digifast.cz/userfiles/koxawasu.pdf
- http://kp-technik.cz/ckfinder/userfiles/files/85415506669.pdf
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160759f78d41e4---lunawesigutuno.pdf
- http://mai-colle.jp/userfiles/file/10991286249.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=rob+thompson+manufacturing+processes+for+design+professionals+pdf
- 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_off00011509.bin0a5dbe38e2644cd292688dfd17afc3425a921b55ef1e2243103607e3f3425db5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11509 | 18684 bytes |
font_01_sfnt_off0001460f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1460F | 16792 bytes |
font_02_sfnt_off00015e26.binc79d0803c8acf1d2f76f843b0092907e43c06c4afd56473a780a4315491c7c23 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15E26 | 11352 bytes |
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