MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed for malicious redirection. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a common PDF-based attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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://synerhu.ru/uplcv?utm_term=descargar+juegos+para+android+desde+la+pc
- https://hiddencliff.kr/FileData/ckfinder/files/20210906_190547B0BC201583.pdf
- http://emrc.ie/upload/imagecontent/file/3786781161.pdf
- https://flims.atelierleuthold.ch/userfiles/files/3384111476.pdf
- https://careerroots.net/ckfinder/userfiles/files/ruziwivifurazixure.pdf
- http://costanzolegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89921492373.pdf
- https://ibexquimica.com.br/ckfinder/userfiles/files/38098812211.pdf
- https://cfi-registration.amyhalter.com/buzzboxgift/img/userfiles/files/20824048458.pdf
- http://congseng.com/uploadfile/files/mozeliwewufidonufatob.pdf
- http://prunay-en-yvelines.fr/ckfinder/userfiles/files/61541827326.pdf
- https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/2f494c087993aa600e1d9df41f3ee866/sifadajowiwunariwepefa.pdf
- http://jessie.vn/images/ckeditor/files/69325874853.pdf
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f15f9e54af---44285966927.pdf
- http://bright-mineral.com/uploadfile/file/2021090918024859.pdf
- http://generaltubi.com/container/ckfiles/files/93929955595.pdf
- http://progetec.org/userfiles/files/90107366258.pdf
- https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/8c4f74be1c23c594dad337d1e387d093/dinikabenijo.pdf
- http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b03f484e5a---dojurowet.pdf
- https://emotionalgift.com/ckfinder/userfiles/files/59427393831.pdf
- https://www.restaurant-latableedevercel.com/ckfinder/userfiles/files/wokapa.pdf
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1613ab0f78793c---samenetarinofuxitenesigov.pdf
- https://huaienclinic.com/uploadpic/files/notadofofuvopuri.pdf
- http://mispuntossaga.com/campannas/file/kunonafuvuniv.pdf
- https://preprodpcb.com/userfiles/files/58031087028.pdf
- http://ryanoomen.nl/uploadimages/files/kapegakovodaduzuzele.pdf
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/5a4f16578f9e5a4efe93cd06d33c33f0/wonebamuribumipimobobusa.pdf
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee9b91436d---53579300243.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e25c.bin25629ec5973e120b90ec79f5b2d9bca435f1a8175a7d9e1c6eea0a14554c2bd0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE25C | 10820 bytes |
font_01_sfnt_off0000fb30.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB30 | 16792 bytes |
font_02_sfnt_off00011342.bin671bb48eb7e3fa07aedf92efe6755b5e15cc9babf911ee3ff40bc274f73b5cb8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11342 | 18536 bytes |
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