MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream, which is a common technique for executing malicious code. The presence of numerous external URIs, many hosted on compromised CMS upload directories, indicates a phishing or credential harvesting attempt. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9827
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://ketchas.ru/uplcv?utm_term=mx+player+vs+vlc+android
- http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16137317431ee3---muvaxisaxexoxezigidovo.pdf
- https://agencement-menuiserie-var.fr/stockages/files/vesefizuzutifupixuki.pdf
- http://embeddedhr.com/ckfinder/userfiles/files/wixafelonixubujibusozajig.pdf
- https://paeonia.ch/userfiles/files/lejederilezapopod.pdf
- https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/e4c66656e48ca0542feb1c31ff9436d1/zebevuxinoz.pdf
- https://dptech.vn/uploads/files/zudoxosoxupe.pdf
- https://taperagi.com/contents/files/jalapopusamejufedevada.pdf
- http://klusjesindex.nl/images/uploads/xasajob.pdf
- http://njbeihang.com/uploadfile/file///2021090414050483.pdf
- https://k85shj16h-561lt.com/contents/files/67510424543.pdf
- https://dyaa.club/uploads/file/jizelubujojow.pdf
- https://raiporjai.com/piceditor/file/30903871275.pdf
- http://rts-3.ru/upload/files/61811617360.pdf
- http://manuale.aziendasulweb.it/userfiles/files/xovoliginufimemal.pdf
- http://youngshiny.com/userfiles/file/1630583951.pdf
- http://zjbfjt.com/upload/files/zafewuvelu.pdf
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613985e231a76---76566452119.pdf
- https://keyword-lda.pt/site/upload/file/16635309158.pdf
- http://phonphangschool.com/upload/files/sesexipeximewebo.pdf
- http://wawabed.pl/uploads/userfiles/file/96995507677.pdf
- http://techbico.vn/uploads/image/files/visomakokiwewire.pdf
- http://hzeiger.com/userfiles/file/givipefipila.pdf
- https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/f933665cdefbe2444739dabcdba4d4cc/58762247357.pdf
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16145822debc2e---ranafizamesolefone.pdf
- http://conservativista.com/js/ckfinder/userfiles/files/sifavinis.pdf
- http://dejede.com/userfiles/file/gutitokowidisufasusubabu.pdf
- https://ta-taiwan.com/app/webroot/userfiles/files/60776810614.pdf
- http://teusz.pl/UserFiles/file/mezesudeze.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_off0000c310.binc50690521834cb53e552b0fa6d1b226b82b38e20ec6bdbd142f8ede049dceb8f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC310 | 10684 bytes |
font_01_sfnt_off0000dbbe.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBBE | 16792 bytes |
font_02_sfnt_off0000f3d0.bin9903e25da5fc66af31b20e407bcf1fbf8170543bc3f6a8d2f1a105dd7fecf914 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3D0 | 20964 bytes |
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