MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to numerous distinct hosts, many of which appear to be compromised WordPress sites. This structure is indicative of a phishing or malware distribution campaign, where users are lured to malicious content. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
Heuristics 6
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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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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 http://ackerviewguesthouse.com/userfiles/file/29360892194.pdf
- https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/3c03c206a67d39f7e5c09fe9dbc46413/viwepifovuwileliberari.pdf
- http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608735684a421---78582312491.pdf
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b62f3f2c4cc---80261828510.pdf
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f2f1039a4dbc12e403a57f1471006f0f/20014824643.pdf
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/8b7133b5bf30d21f253922fd9f7eb709/fefamulolin.pdf
- http://pwr-tech.ru/userfiles/file/fowabigoxavagin.pdf
- http://manavpublicschool.org/manav/userfiles/file/95726907840.pdf
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd19c0cb5d---96921268694.pdf
- https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/dgvg2bodisdn6c3h13v68ii861/44241745171.pdf
- https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/guachcl9j4asa68aqvhgpopu4i/22811491095.pdf
- http://mvclassof1990.com/clients/8/8c/8ca0ba2c7a07c5cd1f21f9fc323c16c5/File/12348740652.pdf
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/ef2ea769e53a02cba0b56652e4a1d207/samimezetozamiwerukuli.pdf
- https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/f8b3dd27461fef98e4d56d68f139f928/favijusikunap.pdf
- https://cristalparkhotel.com/ckfinder/userfiles/files/48579397581.pdf
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/5vqkngipr795jffm73ou3c7lei/21601057420.pdf
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/c292d3394e9c62601fb4f5d8fec0eecc/74925003509.pdf
- http://lyjclinic.com/ckupload/files/44214486056.pdf
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073d80be02ef---fiwef.pdf
- https://lapalettedesarts.fr/gestion/file/nipufaveverevajuwe.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/6cvf73hu7498f4pr4rbctbotgg/bubefobepaduruguwujomu.pdf
- https://skinrepublic.vn/webroot/img/files/53963977114.pdf
- http://nguyenquangcomputer.com/upload/ck/files/dapuliwakodozudo.pdf
- http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078809bd3d46---nupuzusumawitifaxuzokib.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=quiet+non+shedding+small+dogs
- 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_off000137b3.bin2fb6f537cfe5f92d489d1f768bf2eb52e17ce5186cd63e14c2a10c406bb45ce3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x137B3 | 10756 bytes |
font_01_sfnt_off00015016.bin1122ca247c4320707d091443f73caff6ec498187f0f1f38ff6ed41ad36574a24 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15016 | 17060 bytes |
font_02_sfnt_off00017c1c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17C1C | 16792 bytes |
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