MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a fake CAPTCHA lure, designed to deceive users into performing an action that could lead to further compromise. Multiple URLs point to compromised CMS uploads and link farms, suggesting a phishing or scam campaign. The ClamAV detection and ML classifier strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://preserveproperties.com/userfiles/files/10016870992.pdf
- http://yalciniskele.com/imgup/file/60821500378.pdf
- http://portalcom-b2b.es/img/user///file/_0933562001621599575.pdf
- https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/67cba1d23c37f18b3f0c5e8fe5d459b1/51526609808.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/pd3sotv2au93ltnh9v766uk7hp/92138144690.pdf
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985572b06de---60461418797.pdf
- https://hfdjet.com/wp-content/plugins/super-forms/uploads/php/files/a0edaa893ac0540304ba4fb735a18a54/bemotabowegezusopo.pdf
- http://nicenpos.com/userData/board/file/pusezin.pdf
- https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/6aa760f8c453d85c249fd6297a7466e3/mudika.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c103c052a05---23619085750.pdf
- http://ediljolli.com/userfiles/files/59917978058.pdf
- http://moreit.ch/productinfo/file/vubakadonikaxegitoxovi.pdf
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086ce154568d---53401164712.pdf
- https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609e4c4e4fd4c---wavavozi.pdf
- http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/77683681548.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b143671540---mawunanipasonapi.pdf
- https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/1af03bf03aebc559fad0121e4a37c713/66463745035.pdf
- http://elazentrale.de/images/uploaded/file/59546878688.pdf
- http://studiovalecchi.it/userfiles/files/66071074009.pdf
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a896f71ba4e---guvaminowapasudebosopoje.pdf
- https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1609782d3bd0f4---karijozada.pdf
- http://accronline.com/userfiles/file/texuf.pdf
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160e55e52a433d---25905909794.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+make+tracking+compass+in+minecraft
- 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_off0000fa83.bine4209dcbf6ea5995e41f95a5fd15251df419f3a425d3c6c93cd3eeac17865116 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA83 | 18480 bytes |
font_01_sfnt_off00012bc2.binbe09a4f03d0f48d0d7233ca6b94adb0a455a6081b31d16cc8b2e49e0a0d4d398 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BC2 | 10948 bytes |
font_02_sfnt_off00014529.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14529 | 16792 bytes |
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