MALICIOUS
162
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample contains embedded JavaScript, which is often used to execute malicious actions within a PDF. It also features a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to obscure the ultimate destination. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing lure or a downloader for further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.8422
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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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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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://workcoop.org/fckeditor/userimages/file/20210625212125.pdf In PDF document text
- http://china-miyaco.com/img/file/202162575825.pdfIn PDF document text
- http://sun-green.be/ckfinder/userfiles/files/74903036715.pdfIn PDF document text
- http://smeeing.com/userfiles/files/37513086752.pdfIn PDF document text
- https://avenue102.com/uploads/file/42616264248.pdfIn PDF document text
- http://85560891.com/upfolder/e/files/20210721060026.pdfIn PDF document text
- https://clickbox.ro/images/file/63769661667.pdfIn PDF document text
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/46af51570d6398201fb92ca073b8bd6f/buwakenunuvegufazof.pdfIn PDF document text
- http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160f93b4f6d7ec---wewojezutu.pdfIn PDF document text
- http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d71a06c454---tafavokopa.pdfIn PDF document text
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608944d65d915---6084326985.pdfIn PDF document text
- https://liffeyartefacts.com/fckimagefile/file/29412493944.pdfIn PDF document text
- https://bmw-zona.ru/uploads/file/37908258360.pdfIn PDF document text
- http://trevorhannant.com/binezakur.pdfIn PDF document text
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080da92d675d---xigapuxefenifefan.pdfIn PDF document text
- http://burningspearmarketplace.com/js/ckfinder/userfiles/files/24449043883.pdfIn PDF document text
- https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/fe05c6c5e4f60028d433589f9a1d536d/begevopiwajusu.pdfIn PDF document text
- http://vanhacollection.com/images/files/nunonarexirukubopuviv.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccdb63c3fc---latodegitovoguz.pdfIn PDF document text
- https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/65a73635c1b63a6c5a611b7e8b580b8a/teroj.pdfIn PDF document text
- https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/b8093d01505f29e05a614791ab1b0d1d/jijutalimigoboxukega.pdfIn PDF document text
- https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/1030cc329381352e706bd7d388f2aba8/lojebedutowukiwudosesav.pdfIn PDF document text
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/27aa6775891bf97bec85bdef7dede8dc/95490473073.pdfIn PDF document text
- http://spoilersmensgolfclub.com/clients/865201/File/10849516021.pdfIn PDF document text
- https://kvkumariajnkvv.org/singhania/downloads/file/sewifevenebi.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=a+horse+and+two+goats+by+rk+narayan+%281970%29PDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001009b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1009B | 11348 bytes |
SHA-256: e9c76fc458f64d62d3ce0ed772a60e71e4e459f437efbddef267452818836ff8 |
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font_01_sfnt_off00011b62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B62 | 16896 bytes |
SHA-256: 90125186ea6c42daad9625854a070293e77d8c62a9348b862fd75de00860208d |
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