MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs that point to various domains, many of which are associated with compromised CMS uploads or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of creating numerous links on disposable hosting, often used to manipulate search engine rankings for malicious purposes. The ClamAV detection and ML classifier further support the malicious nature of this PDF, likely serving as a lure for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.7657
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=photography+books+for+beginners+pdf+download PDF link annotation
- http://ahchala.com/img/file/48511126034.pdfIn PDF document text
- http://firmykominkowe.pl/Obrazki/edytor/file/57830232671.pdfIn PDF document text
- https://musikkursus.dk/userfiles/file/27017006790.pdfIn PDF document text
- https://www.acetechnology.co.in/wp-content/plugins/super-forms/uploads/php/files/ctlqpejgkig922p2bab9uv3e8k/45093686217.pdfIn PDF document text
- https://cosplay-expo.it/ckfinder/userfiles/files/kimemuginazodosenizeg.pdfIn PDF document text
- http://fence-alarm.com/userfiles/files/89288247188.pdfIn PDF document text
- http://lactopad.com/uploads/files/wapakapibu.pdfIn PDF document text
- http://tccsrl.org/userfiles/files/godapudim.pdfIn PDF document text
- https://mollis.rs//files/69796965006.pdfIn PDF document text
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/923af29584ee119486628048bad5bd07/lefedajegidek.pdfIn PDF document text
- https://gotoko.com/cmsv2/upload/files/pelirepozobamegoti.pdfIn PDF document text
- https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5e6b0c59d---64613600606.pdfIn PDF document text
- https://argekaucuk.com/nbg/upload/files/88504326292.pdfIn PDF document text
- https://penal-garazh.ru/files/45677197468.pdfIn PDF document text
- http://altelaw.com/uploads/image/file/dumebaseravum.pdfIn PDF document text
- https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/27tse2549ju3lif281u2kr4p66/totuzade.pdfIn PDF document text
- http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861897e96e2---22568860751.pdfIn PDF document text
- https://karatenarrewarren.com.au/ckfinder/userfiles/files/logivetel.pdfIn PDF document text
- https://etonbio.com/newsLetters/images/file/29587141846.pdfIn PDF document text
- http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1609236769ad03---vozotolekuzexusexewom.pdfIn PDF document text
- http://drthchowdary.net/userfiles/file/safezakenesatula.pdfIn PDF document text
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a350e3dabe6---93857490804.pdfIn PDF document text
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160725fb70d593---23902927791.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_off0000e4ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4BA | 11208 bytes |
SHA-256: 0f28440a54dd641b96fba5556cbdf79d3883d923f7f08dcd9bd64ceac9dad439 |
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font_01_sfnt_off0000fe9f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE9F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000116b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116B1 | 18316 bytes |
SHA-256: 6786ba6d99c6d6b2fccac2bbe6bae8b1bda393287d54e9004d6d277297673dbb |
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