MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and a large number of external links, many of which point to compromised WordPress sites or disposable hosting. This suggests the document is part of a phishing or spam campaign, likely attempting to redirect users to malicious sites or download further payloads. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9969
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://krisoc.ru/uplcv?utm_term=javascript+engine+android
- http://ydchem.cn/filespath/files/20210903210712.pdf
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/161390a01af97f---xetonakovakoranawepadiseb.pdf
- http://tuecpa.com/file_media/file_image/file/92979566645.pdf
- https://pelicanfinancialnetwork.com/ckfinder/userfiles/files/38856789005.pdf
- http://otohondamientay.com/upload/files/23056066265.pdf
- http://speckrepeg.by/UserFiles/files/tajebijepedi.pdf
- https://footballsod.com/images/ck-uploads/files/betakolebamujipos.pdf
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a99f759ed7---28328527930.pdf
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a2e6e89e10---25767633842.pdf
- http://arohitourandtravels.com/userfiles/file/sixisoturalofojexagem.pdf
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161341f7570463---pesafuzovaxako.pdf
- https://almudenafernandez.co/ckfinder/userfiles/Files/fibazixewavabixedezojemox.pdf
- http://ana-jsc.com/upload/files/75996800752.pdf
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613c640f0932b---bojevagolukak.pdf
- http://laiyi-art.com/userfiles/file/80334096685.pdf
- https://chinatupai.com/web/js/ckfinder/userfiles/files/46254596452.pdf
- https://ka-base.no/images_content/file/44791094124.pdf
- https://www.mnogotrop.com/ckfinder/userfiles/files/gumoduxupanosefejuwi.pdf
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/15020d6e4bf057c6af6d54380bfd3e63/22233797137.pdf
- https://cpsguffanti.it/uploads/file/robuzaronomikisiw.pdf
- http://ingatlantv.tv/userfiles/files/purawokeb.pdf
- http://healingtown.org/userData/board/file/8765495685.pdf
- https://ottopianos.nl/files/mefexifefunejerusiwewomof.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_off00010a40.binb977139c1fb1048fa9903dabcb702ad4351a095d89d94afefd1767b3dd1d5f05 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A40 | 10700 bytes |
font_01_sfnt_off000122bf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122BF | 16792 bytes |
font_02_sfnt_off00013ad1.bin1ed71c0b87b42d321bb09c8907d68a040065bab3b82223e355415ed91cbc2af9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13AD1 | 19408 bytes |
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