MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document contains embedded JavaScript and presents a browser extension installation lure to deceive users. The embedded JavaScript likely facilitates the download and execution of a second-stage payload from one of the numerous external URLs. The ClamAV detection and ML classifier further support its malicious nature, indicating a phishing or trojan distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 8
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2fa814160---64830690302.pdf
- http://fresh-j.info/images/uploadedimages/file/jiriredapaxuregamiteriguz.pdf
- https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/a580b344c893a496a0fd04c466f7fdf4/96415581250.pdf
- http://adria-ex.com/images/blog//file/tevupoxominojirujilejupa.pdf
- http://unnatiwelfareorganization.com/ckfinder/userfiles/files/44242614025.pdf
- http://beijingxinzhi.com/userfiles/file/20210607185757_1869264374.pdf
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/eac6qetgvslkb2jnne80k3kquq/19234746236.pdf
- http://jagatjyotischool.org/jagatjyotischool/userfiles/file/vawozotaxujudisog.pdf
- http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/b29080795ca31bd90f806ce53af07581/sagotijoxujusegugeje.pdf
- http://turinhotelcompany.com/userfiles/files/kevuxunedane.pdf
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a72fcb3ace3---63418157402.pdf
- https://familienbilstrup.dk/userfiles/file/31603456857.pdf
- http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb0dbe3b0e---dufoji.pdf
- http://ksnjl.com/userfiles/files/nofegod.pdf
- https://cuisinescartier.ca/upload/editor/file/pidaxodomedatililiva.pdf
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/ahh2adj1m9vqg4k45mppn9i300/pumasipakelekakabufiso.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a549bd15956---37315797176.pdf
- https://alzubidi.com/userfiles/files/sitotizakibokawowoli.pdf
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b96d83e8e25---29965697170.pdf
- http://longbienco.com/js/ckfinder/userfiles/files/pudofelixi.pdf
- https://diaochue.vn/userfiles/file/44081637178.pdf
- http://93564497.com/userfiles/27974709213.pdf
- https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/d79f3407d0fc1deaa461c671b98d8b4f/bulexawokoxosipedorimoj.pdf
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/24e83db9208a85e322573cabc4f31ba2/rogebugifugevaduxus.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075f7836e9a3.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=copying+from+secured+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_off0000f18d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF18D | 16792 bytes |
font_01_sfnt_off000109a4.bin6cbf70962350b4bb38926d47afb97db57758bd058bc20fed3fc5558703f2ceba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109A4 | 10900 bytes |
font_02_sfnt_off000122ad.bin3e48540786b20ea5c0196976e22d74a39a37a47fa22a133cec03d921a6e5a5a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122AD | 16772 bytes |
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