MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised WordPress sites acting as a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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 https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d030ec21f---xebeze.pdf
- https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160814403e36cb---gepujunizeroxi.pdf
- https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/6c10f5769fcb385a333fe9c694d249b6/4753913964.pdf
- http://imssp.by/data/images/fxeditor/file/latuzurofopumuvuvo.pdf
- http://braciszewska-klimek.pl/fck_files/file/sizaxebowarebofazunesa.pdf
- https://oklogistic.lv/upload/file/93974029680.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b1e59b9e24d---sefoxunavagevanilek.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/bf1dc03ea3013f104ecf942dc34f0f61/21806390534.pdf
- https://aulacvn.com/upload/fck/file/46154010492.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d9de6144e1---nipizopun.pdf
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160914b9769676---jazis.pdf
- http://backyardreleaf.ca/clients/6/6a/6a4eaaf8452764cb6fc14c9064ed0c71/File/63090981003.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3178321642---tutol.pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160943af839557---lawukunupaj.pdf
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/d24a45cc012e46aef704ea74287c558b/69469836934.pdf
- http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a9546b9a5e9---10964035588.pdf
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/fc843798a6ef36a3bd03f9b722fc959f/zanisanarekibiwam.pdf
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/dd78ddebcd001e24868475fa7b4ced0b/finowafujodamakaga.pdf
- http://flambotour.it/themes/userfiles//files/zewexigiwe.pdf
- https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a78f333a9ea---fipituvofizi.pdf
- http://marinda.ru/pics/images/file/xobonasovete.pdf
- http://chokmanee.com/userfiles/file/nixinu.pdf
- http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/zukomobetef.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=kinemaster+pro+for+windows+7+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_off0000f096.bin2a444f8f8ae2ac5349f9503496423c4c9f205b39c6d4428ac2d41b9448a55fee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF096 | 16688 bytes |
font_01_sfnt_off00011c04.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C04 | 16792 bytes |
font_02_sfnt_off0001341b.binfd05a8002a4fc5c448bcc5a6999b2935408ad6fa42f02bfb327924c483c17bc2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1341B | 10788 bytes |
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