MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous links pointing to compromised websites, likely intended to trick users into downloading a password-protected archive. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' strongly suggests the document's purpose is to facilitate the delivery of a password-protected payload. The ML classifier and ClamAV detection further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 8
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://crysiq.ru/uplcv?utm_term=best+app+for+opening+pdf+files
- https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/0606729a6ae35fa5695a5ad75a8dcd07/wuzinireseketawafu.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/cc275ba0a27075c8ce7a4b2bf5f817f4/39764885786.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba8667b73f8---76169220833.pdf
- http://se-ty.ru/uploads/userfiles/file/zutunodujufo.pdf
- https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/de42108c9b0f93bfeaa9dd80d9bbe1bc/tizevaxofajojujamukokuxu.pdf
- http://onlineexpert.in/userfiles/file/15333056029.pdf
- https://jurad.eu/files/file/88581270276.pdf
- http://henrysadiereunions.com/clients/876463/File/gajoj.pdf
- http://akademia-jedenastka.pl/zdjecia/fck/file/fusolefirojujaxarirazozan.pdf
- http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/aa6b0aee5773aaf6533ab636126c7296/53910968925.pdf
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/cn03f5asp3scg2onja560l152l/5608661301.pdf
- https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/eor547329cjrmoa3mqkettb2c9/sodamevadufelu.pdf
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ab209cd532f---refemizanetuv.pdf
- http://mbcasc.net/imgs/file/jetubezu.pdf
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd49cabdf4c---bemodorevag.pdf
- http://amandamaitland.com/images/file/25515893857.pdf
- http://skyrunarser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210605022154712513m536fo.pdf
- https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/b912e10a9dcea983b1b40f94d4d84f32/40930319623.pdf
- https://balbok.net/admin/ckfinder/userfiles/files/zulexenolefev.pdf
- http://dansungsala.com/uploads/files/2319024419.pdf
- https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/fpr30dttm2m7f3bcvmqelia2l5/murububesigadalat.pdf
- https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca6755b132---feteruxejezabiw.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_off0000cd5d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD5D | 16792 bytes |
font_01_sfnt_off0000e574.bin368898e1005050834354fb3f546b0fefaeb17e1aa49540cc17dca90f5e7b957a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE574 | 10728 bytes |
font_02_sfnt_off0000fe07.bind30304283c305ba6aabc82c7f6200bd679faed230734149f504fcc3a46dafbd8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE07 | 16620 bytes |
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