MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to potentially harmful content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights this behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.7049
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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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://synerhu.ru/uplcv?utm_term=otg+software+download+for+android PDF link annotation
- https://cjsc.se/ckfinder/userfiles/files/811248883.pdfIn PDF document text
- http://footstepfloor.com/upfiles/files/jexolikenawaxo.pdfIn PDF document text
- http://grubstreet.ca/ckfinder/userfiles/files/66104114699.pdfIn PDF document text
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ac9657b653---27819757479.pdfIn PDF document text
- http://csc021.com/userfiles/file/20210919073236_pysyuo.pdfIn PDF document text
- http://kssi.ir/public/userfiles/file/jinewuzupajudaweg.pdfIn PDF document text
- http://elitk.ru/_files/lopozexezigeroz.pdfIn PDF document text
- http://maimungkorn.com/UserFiles/file/widezo.pdfIn PDF document text
- https://www.educationsexuelle-ecole.ch/ck/ckfinder/userfiles/files/21769518009.pdfIn PDF document text
- https://hk-delight.com/UploadFiles/file/97088390461.pdfIn PDF document text
- http://lonerangerfanclub.com/ckfinder/userfiles/files/webosarob.pdfIn PDF document text
- https://happy-playground.gr/uploads/_uploads/files/xudeluloxit.pdfIn PDF document text
- http://www.la-rocca.pl/app/webroot/files/files/3479780781.pdfIn PDF document text
- http://ziconiavip.com/uploadfck/file/xifefibaledare.pdfIn PDF document text
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/cvuv4d7v5sg4fpdmtk5jtq9l74/15336097221.pdfIn PDF document text
- http://hengfengpaper.com/filespath/files/20210921160456.pdfIn PDF document text
- http://iltorg.ru/upload/file/jusosisesifikela.pdfIn PDF document text
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d64bc84385---mopewogudiv.pdfIn PDF document text
- http://hotelbellevuepalermo.com/userfiles/files/4950999722.pdfIn PDF document text
- http://quetthe.com/upload/files/jenododeguxuta.pdfIn PDF document text
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145dc60e5e25---9653016715.pdfIn PDF document text
- https://locoffice.ru/userfiles/file/visisusodenuwuje.pdfIn PDF document text
- http://canadanur.com/resimler/files/94879690086.pdfIn PDF document text
- https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613e12204721e---99410248918.pdfIn PDF document text
- http://birkhoffhi.com/userfiles/files/mumeremaku.pdfIn 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_off0000badc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBADC | 16660 bytes |
SHA-256: 013289dbb721393a8f42daf7bbf42db6ec7e0a0d243a961c9c29bbf4e6915780 |
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font_01_sfnt_off0000e607.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE607 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fe1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE1E | 10640 bytes |
SHA-256: 08895b1d49a22dafaea9964fd366b1bec77bdb6fee815faecd5d5deb8cede2f6 |
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