MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or delivering malicious content. The PDF also contains numerous external links, many of which point to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. ClamAV detection and ML classification further confirm its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/sexunuvesa.pdf
- https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/805792dcc6e0ff9530962a234f35b758/vikukitumiwapalon.pdf
- https://malashealthcare.com/userfiles/files/ladezojepezun.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a889e6bd608---22703091030.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5e4175b22---98034718622.pdf
- http://chothuethietbi.info/img/files/68669355563.pdf
- http://a-swiss.com/upload/userfiles/file/957835367.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/30f956a8c7d4e6c3404bb922c60359cb/27196414467.pdf
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5ba4fb25c0---71434134705.pdf
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/32673cc6a4a3366832262e66ffbba32e/zidofejopegitebidowewaxim.pdf
- http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/90953229130.pdf
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/0dc2747fb0ded96df68dd39ac369f6d8/wiputejisemaz.pdf
- http://www.hydro-tg.pro/upload/file/76139417343.pdf
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c30adf0fcb5---lajonu.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a091990d840---revuw.pdf
- http://zonazero.es/userfiles/file/74982326095.pdf
- https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/i1elg2jn0qq75ubv2nc2913jha/murasoperufe.pdf
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/6b87db157bff47d167dec2ee19d06fe9/27685547072.pdf
- https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/4a7495d445cdb295a375592beb33f0f5/95489471586.pdf
- https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/6a7ca4498ea0ed9b29aadb765d00d0ab/mozevegopi.pdf
- http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210525070834999807sgzcj6.pdf
- http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/tut2sjdf1tvica4ilpd6kfsjvb/28464407388.pdf
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/kvbfjigbpbrjap8mid094aaj5e/11444310211.pdf
- http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c973875f4dd---ririvuru.pdf
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbf3788692---31162865116.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=heat+exhaustion+fainting
- 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_off000100e1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100E1 | 16792 bytes |
font_01_sfnt_off000118f3.bin862f7b06ca5eb21098f044db92a8cae05987254f06820ea2f104cfa5c64cb1e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118F3 | 17028 bytes |
font_02_sfnt_off0001456e.bin06ae6f4240e2b258c3d1af262ab1059445d1425e8d590441e986f77942ded4ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1456E | 10540 bytes |
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