MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. The presence of embedded JavaScript and links to compromised CMS upload storage suggests an attempt to host and deliver a second-stage payload. The heuristic 'SE_DOWNLOAD_BUTTON' further supports a social engineering lure to trick users into downloading malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 8
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/23e02b06a62c5bd2730c51601084c23f/13315869870.pdf
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/d4786e23b8f56ebfe06b00b3be94173c/lujojejinoxopusunugi.pdf
- https://eminencesolutions.in/resources/userfiles/file/35641195507.pdf
- http://project-lovcen.me/userfiles/file/kifewiwod.pdf
- http://babywagen24.de/userfiles/file/29774983895.pdf
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160fde991eca4c---samejelumozajakez.pdf
- https://bishopsalamatkhokhar.org/userfiles/file/kexusiwimurigupamigufepe.pdf
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/48583042960.pdf
- http://rracc.com/file_media/file_image/file/59245923307.pdf
- http://tikatalog.sk/_files/file/44977240341.pdf
- https://www.fibertech1.com/my_content/js/ckfinder/userfiles/files/mexowexapo.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edc7d25215d---guzapexezepedukuno.pdf
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a458533c28f---tizibirimijip.pdf
- https://rintrans.com/files/tojegabukakunipokebilumex.pdf
- https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/307efc974763115c2d49c0604a965493/50678657364.pdf
- https://marljivo.hr/userfiles/file/11338550160.pdf
- http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160956d1c2e8ef---56441998584.pdf
- http://assotechne.eu/userfiles/files/zulesegijusizipowoxav.pdf
- http://sunriverps.com/data/editor/file/xuliwaredakezovugulimud.pdf
- http://expertsystemgroup.com/file_media/file_image/file/37580741038.pdf
- http://xn--80aamdqpfpr.xn--p1ai/upload_picture/64604135011.pdf
- http://hornets88.com/clients/56662/File/lurekabab.pdf
- https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/tijamizelex.pdf
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b4181059b---vipezefo.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=kiran+publication+ssc+gk+books+pdf+free+download
- 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_off0000c1cf.bin4a0ab9797f7aee5261572ca7ab09db8a9802ac1246d75a42b58bfe4f2a65d832 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1CF | 20188 bytes |
font_01_sfnt_off0000f671.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF671 | 16792 bytes |
font_02_sfnt_off00010e88.binda45f4182c81fd779e06d8d2c473c0b1c5a3c685c83b1b6a33358ea25b4322ba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E88 | 11204 bytes |
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