MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or are part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware-hosting sites. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://crewmak.ru/uplcv?utm_term=what+is+communication+network PDF link annotation
- https://bakotech.at/uploads/ckeditor/files/gavas.pdfIn PDF document text
- http://sumtinathholidays.com/admin/uploadfiles/file/75520944065.pdfIn PDF document text
- http://tlznailspa.com/media/files/kutozoxutitemabibuxuxeb.pdfIn PDF document text
- https://jnnjhansi.com/userfiles/file/dinixadinotawo.pdfIn PDF document text
- http://aibasavar.edu.bd/app/webroot/ckfinder/userfiles/files/losaturaguxe.pdfIn PDF document text
- https://mvmdigital.gr/files/files/dilezan.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161441170915ff---9622089804.pdfIn PDF document text
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16141df3669cc3---1685981110.pdfIn PDF document text
- http://svadbavmoskve.com/content/xuploadimages/file/kivosu.pdfIn PDF document text
- http://www.sindafaz.com.br/admin/editor/ckfinder/userfiles/files/vejalikidemipaji.pdfIn PDF document text
- http://neoneofytou.com/ckfinder/userfiles/files/24328921170.pdfIn PDF document text
- https://promaxsuspension.com/csmimage/file/22262748994.pdfIn PDF document text
- https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/958c21af23ca604b79fefd69595238c5/37244484122.pdfIn PDF document text
- https://cremyco.com/app/webroot/docs/file/sifamuzifik.pdfIn PDF document text
- https://reaga.net/js/ckfinder/userfiles/files/54279957469.pdfIn PDF document text
- http://ytbozhuo.com/upload/file/101028451393.pdfIn PDF document text
- http://filtrydokoparek.pl/img/all/48365725090.pdfIn PDF document text
- https://namhunglogistic.vn/site/files/18743734901.pdfIn PDF document text
- https://speak82.com/_UploadFile/Images/file/39925446966.pdfIn PDF document text
- https://sca-eagleegg5k.com/ckfinder/triplebuserfiles/file/79115432263.pdfIn PDF document text
- https://marosme.ro/hirek/file/61020445208.pdfIn PDF document text
- https://albawadiroad.com/userfiles/files/7082379059.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d50d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD50D | 16236 bytes |
SHA-256: 0feb23c94b39d92cbd05efa197ddcf43fa2ba1866c7a59f9b915ae1315cc36c0 |
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font_01_sfnt_off0000fead.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEAD | 10720 bytes |
SHA-256: 428e6bdcabb68b04550d6dfa0687b9fa35eb6371146018b4b43c06c85d8a9ef9 |
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font_02_sfnt_off00011740.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11740 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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