MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Several extracted URLs point to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically highlights the non-clustered link farm nature of the document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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 https://synerhu.ru/uplcv?utm_term=how+to+recover+deleted+contacts+from+recycle+bin PDF link annotation
- https://theipbuzz.com/images/file/towefulofaraf.pdfIn PDF document text
- http://diakmelo.hu/ckfinder/userfiles/files/kopobikaretolubat.pdfIn PDF document text
- http://abwlargo.com/uploads/files/zoxofegijaj.pdfIn PDF document text
- http://primebrokeragetx.com/ckfinder/userfiles/files/4437142490.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612f6c6d8c169---68010501026.pdfIn PDF document text
- https://adci.vn/data/upload/file/65545030473.pdfIn PDF document text
- http://ekstelekom.com/userfiles/file/xifizom.pdfIn PDF document text
- http://rinsacars.com/files/others/96827574394.pdfIn PDF document text
- http://mgocsm.in/userfiles/file/47178734421.pdfIn PDF document text
- http://metallpress.ru/files/getudiwupijikovip.pdfIn PDF document text
- https://southernwashpros.com/nbloom/fckuploads/file/81199757387.pdfIn PDF document text
- http://inruho.ru/ckfinder/userfiles/files/10553589886.pdfIn PDF document text
- http://forma8.kz/ckfinder/userfiles/files/dumukujiposuvifij.pdfIn PDF document text
- http://vidol.nl/userfiles/file/77034612656.pdfIn PDF document text
- http://squash-fitness.cz/userfiles/file/gufajopirulajelod.pdfIn PDF document text
- http://cecev.com/stockages/files/54246575263.pdfIn PDF document text
- http://dnt-mayak.ru/content/File/8853675551.pdfIn PDF document text
- http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613396d610559---7653810443.pdfIn PDF document text
- https://abouelhoulgroup.com/userfiles/files/kewakurajezotekukivodud.pdfIn PDF document text
- http://a-pro-peau.fr/userfiles/file/bogetazuf.pdfIn PDF document text
- https://artgallery.devctn.com/ckfinder/userfiles/files/pibepizakufagidam.pdfIn PDF document text
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/7f57cd002e34a14144c5446c9b7365cc/titubadatiborifazomojiv.pdfIn PDF document text
- http://lookkorea.net/userfiles/file/41124481331.pdfIn PDF document text
- 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_off0000d4d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4D1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ece3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECE3 | 17632 bytes |
SHA-256: 8d553cfefd53670dd4b31dc0c52169be4189792650900693a71be9f944d41b19 |
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font_02_sfnt_off00011ae9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11AE9 | 11036 bytes |
SHA-256: 80be9ee27cfa29c40222a9703242acb629879391cd2cab7c5ee365cd47df8f8c |
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