MALICIOUS
132
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF containing embedded JavaScript, which is often used to redirect users to malicious websites. Several heuristics indicate the PDF acts as a link farm, pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution campaign. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.
Machine Learning
- Nyx PDF Classifier suspicious score 0.3517
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 https://oniceh.ru/uplcv?utm_term=autoimmune+hepatitis+pdf+2018 PDF link annotation
- http://anapro.com/ckfinder/userfiles/files/72742642356.pdfIn PDF document text
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/sbirr54dasbebil8nkh38t9t3b/28519504032.pdfIn PDF document text
- https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/ush4dk3i2d592g2gijr136qke8/penojotiritupokonipufafux.pdfIn PDF document text
- http://abwvictory.com/uploads/files/24850602821.pdfIn PDF document text
- http://klimatyzacjaradom.pl/userfiles/file/95624557384.pdfIn PDF document text
- http://doubler-son-capital.com/photos/files/71479767298.pdfIn PDF document text
- https://posaonakosovu.com/ckfinder/userfiles/files/punod.pdfIn PDF document text
- http://fkjz.cn/upload/files/2021/09/202109021121297860.pdfIn PDF document text
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4394475c7f---13735841492.pdfIn PDF document text
- https://cambodiadriverservice.com/userfiles/file/zidav.pdfIn PDF document text
- http://tms-technology.com/ckfinder/userfiles/files/73617279583.pdfIn PDF document text
- http://ettorebelfioreliutaio.it/userfiles/files/30604776662.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160ac737adf8fb---3053642740.pdfIn PDF document text
- http://susanirvine.com/clients/82887/File/borevapereruwitapazolobem.pdfIn PDF document text
- https://soosekszer.hu/upload/files/pizub.pdfIn PDF document text
- http://onishi-kyosendo.jp/archive/31248995794.pdfIn PDF document text
- http://biolabsrl.org/userfiles/files/futineponevufetojuxato.pdfIn PDF document text
- https://gencshoworganizasyon.com/upload/ckfinder/files/dopafonanolofakoxi.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab9fb69f154---nedojukovilizu.pdfIn PDF document text
- https://grupahatak.pl/admin/_fck_files/file/ruvotowo.pdfIn PDF document text
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/520dobpa53j7tjlvpp2q8ht9v7/94706052677.pdfIn PDF document text
- http://regalmotors-jp.com/js/upload/files/dadasorimagibate.pdfIn PDF document text
- http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160960c397017f---momoneweburog.pdfIn PDF document text
- http://keletunderground.hu/images/uploaded_pics/file/36453470449.pdfIn PDF document text
- http://neoneofytou.com/ckfinder/userfiles/files/musuzefabu.pdfIn PDF document text
- http://wawa757.com/uploads/files/49027167658.pdfIn PDF document text
- http://gdlejia.com/uploadfile/files/20210822_091138.pdfIn PDF document text
- 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_off0000c1c3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1C3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d9da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9DA | 11200 bytes |
SHA-256: b2b1695d2ad74bcbee1e5792eba9f78951901b29248c3fb20cecef092eaa34bd |
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