MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. The PDF also contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a phishing or credential harvesting attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://irlanc.ru/uplcv?utm_term=things+that+start+with+letter+s+in+the+house
- https://kisikana.hr/userfiles/file/madokiniva.pdf
- https://pypconsultores.mx/userfiles/file/12793014687.pdf
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b282dfd9305---xopiforakovevof.pdf
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b2fa11eb7---49168227918.pdf
- http://www.emailposte.com/pictures/1285224236.pdf
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/9e26f680add1dbdb103d7bc835ba484a/zatov.pdf
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a79138842---24100617558.pdf
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b5a18e39f---barezowirafim.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db79ce3af53---56916596272.pdf
- http://kolasinprevoz.rs/slike/files/17610012457.pdf
- http://monkey-do.net/userfiles/file/83329050133.pdf
- https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3925e85994---nujuludugil.pdf
- http://55thocscompany.com/clients/62662/File/2861891003.pdf
- http://computerdoki.hu/user/file/tafuparaboselakekapusemuj.pdf
- http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/sijujiwo.pdf
- http://goddesshair.net/upload/users/files/vopisadiz.pdf
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab14f9cff62---10452121596.pdf
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607153c30b4f5---ziresaxemenesabeta.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3e32a76fc---bitaxe.pdf
- https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/0cdd276358534c127a9b5699e41337ae/22442677217.pdf
- http://e-sportis.com/images/upload/39637581504.pdf
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/82fc2c8da4587986c2cfffb5188f5c37/melosozojumizigabozuw.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_off0000ba55.bin3dd01a2bf69c505fc29c67619024ed6e4a926dc4681168fd26b660b63fa73d56 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA55 | 16140 bytes |
font_01_sfnt_off0000e3c6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3C6 | 16792 bytes |
font_02_sfnt_off0000fbdd.binef5c5f0938d2bfeec0e4d410bde478990783331f40a626394017c1f96a981028 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBDD | 10536 bytes |
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