MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the presence of a link farm pointing to compromised WordPress upload storage, suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated and appears to be non-readable content generated by wkhtmltopdf, providing no direct user-facing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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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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://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/161414dd1bef79---tegefojedojul.pdf In PDF document text
- http://www.kotolantopeni.cz/files/82283310478.pdfIn PDF document text
- http://abwmercury.com/uploads/files/63431059940.pdfIn PDF document text
- http://marasintl.com/public/ckfinderuploads/files/loxebomagenebo.pdfIn PDF document text
- https://conexusinternational.com/ckfinder/userfiles/file/zopijuvud.pdfIn PDF document text
- https://aldaserwis.pl/ckfinder/userfiles/files/7688094497.pdfIn PDF document text
- https://samsunyapi.com/userfiles/files/kegurijogonefokanoxarude.pdfIn PDF document text
- http://laxycoffee.com/upload/files/tetixopoxanar.pdfIn PDF document text
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613387ca0b698---99314785190.pdfIn PDF document text
- http://duythuc-bearing.vn/uploads/userfiles/file/pevivajenogitavogoxi.pdfIn PDF document text
- https://stw-nowogard.pl/download/file/jifinigetukazu.pdfIn PDF document text
- http://doo-san.com/userfiles/file/20210905001316.pdfIn PDF document text
- http://csc0512.com/userfiles/file/20210914021240_pawpbt.pdfIn PDF document text
- http://www.kickcommerce.com/userfiles/file/timovuponozutabejomemapa.pdfIn PDF document text
- https://dancleland.com/img/upload/file/mekuzatosur.pdfIn PDF document text
- http://szpitalstrzelin.pl/userfiles/files/lafinukotajiduzeman.pdfIn PDF document text
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/117ed1bdcaea5c1ae76769158abded20/99815340512.pdfIn PDF document text
- https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/nbv2j07bjqfdu97op3uuoqn9cd/josaxetiv.pdfIn PDF document text
- http://gocreate.termall.pl/upload/fck/file/5901874772.pdfIn PDF document text
- https://autotoner123.com/home/autotone/public_html/ckeditortest_WORKING/ckfinder/userfiles/files/87944072012.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=android+vs+ios+market+share+australiaPDF 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_off0000cbfd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBFD | 10752 bytes |
SHA-256: 22d456856d106748638f73e972008a85ca4c4a51a91239bcda84d1250566b96d |
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font_01_sfnt_off0000e48b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE48B | 16996 bytes |
SHA-256: 608f3f4e34ba5fbb53f31b4508c2fb288eca82a2b88876eeae8a75ceec3d32bf |
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font_02_sfnt_off00011079.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11079 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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