MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Several heuristics point to the PDF acting as a link farm, directing users to compromised CMS upload storage and disposable hosting sites. These URLs are likely used for phishing or to serve further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://bydnjl.com/userfiles/files/20655451302.pdf In PDF document text
- https://fultoys.com/userfiles/91667006538.pdfIn PDF document text
- http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5f4d6867d---62857359442.pdfIn PDF document text
- http://am-assets.com/aom/magnolia/userfiles/file/bifexabuxaradurejujabe.pdfIn PDF document text
- http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d8fb09320f---76367752092.pdfIn PDF document text
- http://techbico.vn/uploads/image/files/fogutixikanotigomusa.pdfIn PDF document text
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/6a6e9a3b22a2a7e2c0e8d423b738308e/43919016652.pdfIn PDF document text
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/fujfs18797gpjd0oh6583tmimg/toforadid.pdfIn PDF document text
- https://turkuazhost.com/calisma2/files/uploads/39774187317.pdfIn PDF document text
- https://transpack-krumbach.de/_upload_bilder/_filemanager/file/difosawofapatubuludi.pdfIn PDF document text
- http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aaef8d5d42---vivexuxevotomevap.pdfIn PDF document text
- https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/fc2cb638b7a08177189e3c1df4d2d31c/kakuriboboko.pdfIn PDF document text
- http://copy2d.com/ftp/image/file/16237783409.pdfIn PDF document text
- http://retroldn.com/userfiles/file/91908648072.pdfIn PDF document text
- http://amoy-art.com/Upload/file/zobugasulukozenan.pdfIn PDF document text
- http://luxcottage.ru/stroykamen/userfiles/file/98948399013.pdfIn PDF document text
- http://xn--h1agcmh.com/ckfinder/userfiles/files/duratinafonume.pdfIn PDF document text
- http://artecgroupservices.com/imagenes/file/potozawawa.pdfIn PDF document text
- http://jtipartner.com/ckfinder/userfiles/files/memilevelisar.pdfIn PDF document text
- https://rajakeempat.com/contents//files/sozimurusokixat.pdfIn PDF document text
- http://hwayinn.com/image/files/20210603_024359.pdfIn PDF document text
- http://doks-films.com/pcms/content/file/86365605055.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=bascule+rst+pdfPDF 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_off0000c237.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC237 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000da49.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA49 | 16952 bytes |
SHA-256: b92bcea7f40a82194140fa5843a445080e7524372856827be2e158cb0cea6130 |
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font_02_sfnt_off000105f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105F3 | 10452 bytes |
SHA-256: 843d7b9958c2b95cff7b6e9b74bfdb712f1c28c5854fbe67bd1e8b70c6c10f40 |
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