MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS upload storage and disposable hosting, forming a link farm. This suggests the document is designed to lure users into clicking these links, potentially leading to further compromise or phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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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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 http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/178760256160e1583749677.pdf
- http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/zejatuzuxixozeralalipujeg.pdf
- https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/29aa90ea2bc9ec79db6c310c97f63b28/vobogekolirelesibog.pdf
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/a9d4dd24d36aab3489cf04c7ac985b1f/sikivoma.pdf
- http://sam-global.info/files/file/novowoduvusirabagugilapeg.pdf
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609b04f4276d2---dotag.pdf
- http://jenan.com/ckfinder/userfiles/files/nojotibaxevixeda.pdf
- http://emirates-offshore.com/uploads/image/file/farogevasetupolutozugi.pdf
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d74c476ae4---13063738784.pdf
- https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/m7f95o9dc5fbbfh5i10mt5bgg9/85790735822.pdf
- http://tamlaproject.com/userData/board/file/67656154905.pdf
- http://accomplishtheimpossible.com/userfiles_ati/file/nasomewegivewoxojafelis.pdf
- https://rubyyadav.com/nbloom/fckuploads/file/37023996252.pdf
- https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/msgm4nll2ms759fdnbtcsp3fa7/19464750499.pdf
- https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160733650b9d46---gexipetodar.pdf
- http://toanthinh.vn/webroot/img/files/56073038956.pdf
- http://stlnsk.ru/uploads/file/zororoma.pdf
- https://i-chat.tw/js/ckfinder/userfiles/files/16673435500.pdf
- http://ngnjl.com/userfiles/files/subinaber.pdf
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/56cde55282ec767b6843c0a21a5bfb47/51223230769.pdf
- https://czus-lukasa.sk/userfiles/file/71183882514.pdf
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090aa45ddd2a---81806635098.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=teaching+experience+certificate+format+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_off0000dca5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCA5 | 16792 bytes |
font_01_sfnt_off0000f4b7.bin8fe2f4ef66025587cba2e71de76bd2ac9fdd529b17ba148af7c1815835dbe9f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4B7 | 17224 bytes |
font_02_sfnt_off00012164.binadf3f76a382ef7e394edef2b35f658247669bd4a2d10e23d429ad763b99b951b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12164 | 10920 bytes |
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