MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting. The presence of a link farm suggests an attempt to direct users to malicious content, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://crysiq.ru/uplcv?utm_term=batman+earth+one+pdf
- http://xn--90aoa5aj.xn--p1ai/ckfinder/userfiles/files/26968834268.pdf
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16131085f85034---50787716667.pdf
- http://language-coach.pl/uploads/files/66362303819.pdf
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/6addafe22ce795450f45af8f78a949f6/xupozuraguwexulebola.pdf
- http://tatvideo.ru/ckfinder/userfiles/files/dajakaxinumepukizib.pdf
- https://suthuytinh.com/app/webroot/uploads/files/28060567040.pdf
- http://studio-orlandini.com/userfiles/files/40359150047.pdf
- http://www.ettermanenterprises.com/ckfinder/userfiles/files/48773390077.pdf
- http://tlumacz-bialystok.pl/pliki/file/subobibaniwejet.pdf
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/3bf2dfd54a048c972e01a01f6207dd26/65241886485.pdf
- http://jmk.kr/ckfinder/userfiles/files/93972057043.pdf
- http://njbeihang.com/uploadfile/file///2021090109043442.pdf
- http://technimexvn.com/images/ckeditor/files/3226076806.pdf
- http://weiken-rc.com/upload/files/93312064566.pdf
- http://ckudzcssffhhj.handysociality.com/upload/files/78937509911.pdf
- https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/5954b4329a3a6be358b05b762d25fdec/90796272187.pdf
- https://starfoil-mail.nl/uploads/wysiwyg/84703020936.pdf
- http://docando.es/js/ckfinder/userfiles/files/netadelu.pdf
- http://metamorfoza-krosno.pl/userfiles/file/42970616922.pdf
- http://htwy.com/upload/file/wudotixowatapavedofuz.pdf
- http://tiquital.com/documentos/file/29785957724.pdf
- http://topoint.cc/userfiles/fckFile/20210903095049.pdf
- http://drcleancenter.com/uploads/files/202109082248023906.pdf
- http://maility.pl/_ADRESuserfiles/file/36746791274.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_off0000e18a.bin0470a4980464592fad18414a7993731dec33e910ea301f0931a788e302e43a8d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE18A | 17724 bytes |
font_01_sfnt_off00010f1a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F1A | 16792 bytes |
font_02_sfnt_off00012731.bin1f31ac56064604127411d9a82a1165e68cb61703bf166ae0f3cecb7b91ebb6e0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12731 | 10512 bytes |
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