MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external websites, some hosted on potentially compromised CMS platforms. The embedded URLs, such as http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae8b8d8c7e---wirevunixosogerelebosolo.pdf and http://karlsbach.de/userfiles/files/79684647976.pdf, are likely used to host or redirect to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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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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://karlsbach.de/userfiles/files/79684647976.pdf In PDF document text
- https://cqhuaan.myhost360.cn/upload/files/09-04-19-18-14-54.pdfIn PDF document text
- https://nmg.lv/img/uploads/files/patesigebufidagasafisato.pdfIn PDF document text
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae8b8d8c7e---wirevunixosogerelebosolo.pdfIn PDF document text
- https://mariapolis.es/ckfinder/userfiles/files/zokiju.pdfIn PDF document text
- http://studiobonvino.com/userfiles/files/bozubokivupoziduv.pdfIn PDF document text
- http://obrienbuilders.com/userfiles/file/8512696895.pdfIn PDF document text
- http://ambvetsanprospero.eu/userfiles/files/90895337793.pdfIn PDF document text
- http://www.yoko-ono.be/images/userfiles/file/51403639340.pdfIn PDF document text
- https://habibitoursegypt.com/ckfinder/userfiles/files/84709842561.pdfIn PDF document text
- https://korovin.org/site/img_ufiles/ravenuxumure.pdfIn PDF document text
- http://blankheich.de/images/uploads/file/47693807206.pdfIn PDF document text
- http://klpa.net/userData/board/file/suwodipomutomaj.pdfIn PDF document text
- http://kirsanov-maslo.ru/uploads/golegiwezasaxuvomuteb.pdfIn PDF document text
- http://chinalabware.ru/d/files/47945451127.pdfIn PDF document text
- https://die-elke.de/cms/elke_page_files/file/sazan.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613417821ec90---redivejekix.pdfIn PDF document text
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/fjpa6bjr92n2lbjmi6c8l9ubt1/segugokodifavezufuxebib.pdfIn PDF document text
- http://biswasi.com/userfiles/files/bivijuwudevatujev.pdfIn PDF document text
- https://tessuno.com/upload/files/613eefa31642b.pdfIn PDF document text
- https://lenaoyunlar.net/calisma2/files/uploads/2509822003.pdfIn PDF document text
- http://toyotarent.tw/FileData/ckfinder/files/20210912_F365D441266B9DA3.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=make+and+receive+calls+over+wifi+androidPDF link annotation
- 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_off0000dd2e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD2E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f540.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF540 | 17288 bytes |
SHA-256: 13eb070d04715eb2cfaff561a6801a305e41f8825852b3fdb4cf244416057cb8 |
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font_02_sfnt_off00012263.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12263 | 10608 bytes |
SHA-256: e3c318745e4827f1e721651642fa78276eb7d2d68dc475605f0a79b348ffe988 |
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