MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URI heuristics and the sheer volume of links indicate a strong intent to lead users off-site, likely for credential harvesting or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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 https://chcial.ru/uplcv?utm_term=polarization+of+dielectric+material+pdf PDF link annotation
- http://medicalproduct.hu/images/files/nekozip.pdfIn PDF document text
- http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/15489476582.pdfIn PDF document text
- https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b0c25b182---petatedatek.pdfIn PDF document text
- http://cuacuongiare.vn/upload/files/modeje.pdfIn PDF document text
- https://astefin.ro/ckfinder/userfiles/files/pujisedusaxutigofibik.pdfIn PDF document text
- http://photou.cc//ckfinder/userfiles/files/rejazuvalo.pdfIn PDF document text
- https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/16116e496d63a3---18439266829.pdfIn PDF document text
- http://longthinhphat.net/uploads/files/15483480791.pdfIn PDF document text
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1f3efa9c29---nuwumilevepira.pdfIn PDF document text
- https://alcoquimicos.com/ckfinder/userfiles/files/xobukulasolaxawidadixamag.pdfIn PDF document text
- http://wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/82103667201.pdfIn PDF document text
- http://michael-dhom.com/webseiten/file/loxoxizumezatepez.pdfIn PDF document text
- http://xahscw.com/userfiles/file/90368753798.pdfIn PDF document text
- https://proxus.nl/file/43890823532.pdfIn PDF document text
- https://dampinggame.com/calisma2/files/uploads/welezadiw.pdfIn PDF document text
- http://tafgambiatours.com/userfiles/file/66960685881.pdfIn PDF document text
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161310e5e438d3---44433293401.pdfIn PDF document text
- http://fobosgrunt.ru/files/ckfinder/files/75564928020.pdfIn PDF document text
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a825c8ea7cd---81538461574.pdfIn PDF document text
- http://pkynfe.net/userfiles/file/dusemepa.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/a69b9d3c421f9fa10d899512bd69e708/1093323015.pdfIn PDF document text
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/12a3ba909962c60eb7b7f676a225710c/xubifot.pdfIn PDF document text
- https://camping-du-lac-dijon.com/fichiers/25925992296.pdfIn PDF document text
- http://stolizstekla.ru/userfiles/file/16418501679.pdfIn PDF document text
- https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/d29f4d9bfedda8ed6f219f71cf16ee29/gigafuwupepuvako.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_off0000c1e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1E7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d9fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9FE | 10672 bytes |
SHA-256: 5decdf6fa4418a26b96870e87ef0786783490e64d835b520b168677f3b513ec5 |
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font_02_sfnt_off0000f26f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF26F | 15612 bytes |
SHA-256: bf8f54faf4c070662ac74d7d92ec101a573b6b11972003f0c1c30a8852dff403 |
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