MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URLs, many of which are hosted on compromised or disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, suggesting an attempt to distribute malicious content or phish users. The embedded JavaScript likely facilitates the redirection to these malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://cructi.ru/uplcv?utm_term=mathematics+for+machine+learning+pdf
- http://syntrend.critical.tw/upload/files/bifilawiwibus.pdf
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161372807c6c74---54020752117.pdf
- http://aluminial.pnh.pt/js/ckfinder/userfiles/files/37969384312.pdf
- http://rs-entp.com/upload/file/56508723263.pdf
- http://www.advokat.com/app/webroot/img/fck/file/jatib.pdf
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/b9f369d0105f3dd29925a0a444b45186/pefovebokigaxurer.pdf
- http://hichipper.com/hichipper/uploadfile/file/2021090712510373499.pdf
- http://masan315.net/board/imagefile/file/xezosefumijevipifuvelaw.pdf
- http://myxroad.net/upload/userfiles/file///jajukunatunumal.pdf
- https://cuatudongsaigon.vn/uploads/files/15821164036.pdf
- https://www.travelknowhowscotland.co.uk/assets/js/ckfinder/userfiles/files/93768949088.pdf
- https://greengenome.in/admin/userfiles/file/tukizoxetovopitevan.pdf
- http://werkkledingverkoop.nl/images/docman/files/gozolilitosozavari.pdf
- https://inprovitperu.com/ckfinder/userfiles/files/gedigamuzunis.pdf
- http://felixefontesadvogados.com.br/ckfinder/userfiles/files/74466378742.pdf
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613520be7d31f---zutal.pdf
- http://schodylux.pl/userfiles/file/61803725725.pdf
- http://studiopetrilli.it/userfiles/files/wifoledetetexawuxima.pdf
- http://stauarchitetti.eu/userfiles/files/66318690820.pdf
- https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/836e590f9acc68b6d4a824c443dc7f0f/xolobiveremelopolivuvu.pdf
- http://nhabe.com.vn/ckfinder/userfiles/files/vexibevakif.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_off0000bf03.binec856bbcd7fe5b9a92ab890269bee2ca07c60a685dc087c39ebfc27954fbe282 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF03 | 11060 bytes |
font_01_sfnt_off0000d85c.bin323eea29dddadad7b44862e56aaa35b3c4d43a413fff485328b89f1a36c0041d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD85C | 16624 bytes |
font_02_sfnt_off00010326.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10326 | 16792 bytes |
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