MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple URLs pointing to compromised websites, suggesting it is designed to download a second-stage payload. The presence of link farms and disposable hosting indicates a deliberate effort to obscure the malicious infrastructure. ClamAV detection and ML classification further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 9
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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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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://inwebjor.ru/uplcv?utm_term=grade+9+english+exam+papers+and+memos+pdf+2019
- https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a56ae7c52---bakelateguruketedom.pdf
- http://solar-makernavi.com/ckfinder/userfiles/files/34083776168.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16096deb70fbf3---gaxenu.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16085b689dad81---gezajejemomif.pdf
- https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/bdf9eb7d33ffc4d2f403f4090ae76756/gesamin.pdf
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/61396604548.pdf
- https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/015bb7566ede2254080527ec2d0e9d0a/rejerotulibevifasit.pdf
- http://winteringlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wubalebik.pdf
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/tackqq8vg5vt2mri264ntdprv7/28744351779.pdf
- http://tomaszskiba.com/userfiles/file/80362349605.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c22a3647e8b---potuwoje.pdf
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c090f6378e1---86109719029.pdf
- http://www.findvoters.com/userfiles/file/ravapixaler.pdf
- https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160751b0578b32---77887079183.pdf
- https://plasy.com/uploads/file/59698803077.pdf
- http://mikllc.mn/uploads/files/88437373549.pdf
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/7119178b3bfc00d318354d8530b0c92c/72448012427.pdf
- http://xn--o39a91gvwm83kbsn.com/FileData/ckfinder/files/20210715_CF42A0151BD0C411.pdf
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/dc06c976c449d7c74bf170845be77723/lazejizuworanut.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/1e7e067ab9a8bd61626bd2412269d043/17661894006.pdf
- http://blpest.com/UserFiles/file/73968003346.pdf
- http://brooklinehs1964.com/clients/6/6a/6a3559cec3eb17f551da2d864c8c85ab/File/resibosuzigopijab.pdf
- http://dochoiotovn.com/uploads/userfiles/file/gozagelomuxet.pdf
- https://gonguyenkhoi.vn/upload/files/41015581076.pdf
- http://ranaghatpchsschool.org/userfiles/file/81693513782.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_off0000e3cb.bin11d6e457a17127fbca094e1da2af0d64596aa867923529c6681274d9e64df5c2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3CB | 18156 bytes |
font_01_sfnt_off0001135d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1135D | 16792 bytes |
font_02_sfnt_off00012b74.bina8c37dbfee7eb48903a8ed6c1f9cb084456332954e20e1eff5b41615568af2c3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B74 | 11452 bytes |
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