MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document that exhibits characteristics of a phishing lure, as indicated by the 'SE_INVOICE_LURE' heuristic and the numerous embedded URLs pointing to disposable or compromised hosting sites. The ML classifier and ClamAV detection strongly suggest malicious intent. The PDF contains a link farm designed to redirect users to potentially malicious content, likely for downloading further stages of malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9927
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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://nomylo.ru/uplcv?utm_term=gujcet+2019+biology+paper+solution
- https://daotaolaixesontay.com/uploads/file/winuwepulenumarol.pdf
- https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/02cf9bf47670018059ad53cb7f70cbe5/popogobasu.pdf
- http://gloucesterclassof81.com/clients/23558/File/23073595270.pdf
- http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/dowevosavijodudabawidigaz.pdf
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/46b0c371596f80f63709eb50258b033e/85815839280.pdf
- https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/a0c32t00tcicil351av8jfrk3p/gudesetodukev.pdf
- http://apluskleaning.com/admin/images/file/milefejatipebedoz.pdf
- http://eko-inwest.eu/upload/file/xekaguwazakiw.pdf
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/06286e90df55f7672ab72d5bcf421548/sajitolajawunusanelun.pdf
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd29e5d9ab---75924915530.pdf
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c62f7030015---jegovijavekojo.pdf
- http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16070e0cbe93cc---47321101569.pdf
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/2d4t7bdo77plkjim8jtbbe9g75/betezalaroji.pdf
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5j3io5eo71p40sugii542g4up1/97801167316.pdf
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/e436e6bc1d7061614869a418f2f4d13c/petoj.pdf
- http://rts-3.ru/upload/files/12842942009.pdf
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072e49290808---wusavapumabezekepinisi.pdf
- https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/2ab90e5c7188445ba415c474faf06205/24485483556.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c92a4e8cb6---xijinoxunivi.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/j7coalogs8hus0semhkk5dva32/68600795142.pdf
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/eac6qetgvslkb2jnne80k3kquq/19234746236.pdf
- http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/47564067245.pdf
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/9qbus3mvsrcqf2u6fv96chbg86/nenukogopupirewu.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f1a2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1A2 | 16792 bytes |
font_01_sfnt_off000109b4.bindafa533606aa02555f5d347beb7164a65dc2d17e88fe26ccd82a6f9e3cea9a9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109B4 | 17992 bytes |
font_02_sfnt_off00013947.bin6045b908894b3fb971742614ddb67fed3e1723d51b8be139549ff6a8fdc1710c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13947 | 11532 bytes |
font_03_sfnt_off000154a4.bin9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x154A4 | 16092 bytes |
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