MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to potentially compromised websites hosting further malicious content, disguised as a bookkeeping document. The presence of embedded URLs and the heuristic 'SE_INVOICE_LURE' suggest a phishing attempt to trick users into downloading additional malicious files.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
Heuristics 7
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://nsck-cykelmotion.dk/ckfinder/userfiles/files/vaguxijatubobenepogogezuw.pdf
- http://sghscsjamarai.org/guruhargobind/userfiles/file/24434624765.pdf
- https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/nlq82dica8316h1ttlqqnqa8md/wivowafelegobisogazekoviv.pdf
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/3e8cc1d41442533a96aafbc87305591b/53360620451.pdf
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8f0344091b---nexomigomo.pdf
- https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/4slkn7aduge4bdnomqgc2c7ovd/vavidurazupuwodoxofov.pdf
- http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160ca2cfa2f2c4---xurutukabanowedebowize.pdf
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/rr8ovqoj2sob54h7js2kq5hf77/sarup.pdf
- http://amdind.com/userfiles/file/vakifodovogenafivine.pdf
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/6de0f7be827513872bc0e05ce5c17801/rodunoxudewo.pdf
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/6da8808468dad169941c7ac7a7c39952/1362088640.pdf
- http://www.aportecnica.com/imagenes/editor/file/javutonifube.pdf
- http://hanleyresources.com/images/peberoxup.pdf
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/7ia3vf73ma9jevser6i8pfsa97/duwivo.pdf
- http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16094593915c54---46072096391.pdf
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16070e07578b6f---pebekozosuxapokebumubuw.pdf
- http://tantex.org/tantex/tantexuserfiles/file/xatoxumudorolibevijufodo.pdf
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/85a7cd4a7012841419a7e2737720edec/4504626525.pdf
- https://hbfilm.ca/resimler/files/pomudub.pdf
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/6811ae801edf89f7bb69e5fb794abdb0/16316388854.pdf
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/2450614f9fc142b657c91693d01a35e1/15237238881.pdf
- http://kondicionery-dolgoprudny.ru/upload_picture/file/tixorafurumado.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16085799da3473---zowijigibix.pdf
- http://diysmart.net/userfiles/file/46226236063.pdf
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160782e802d79a---puvez.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=commercial+book+keeping+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_off000100c7.bin81698f7f8d5132baa85f34cb9ddfb173ae72e32ab7b21b849c91ccfb2e094638 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100C7 | 16960 bytes |
font_01_sfnt_off00012cdf.bin012a1e7eec6ae3e4a24c55e7a278ca71b37c32fde8b7e216406e4bd852557a63 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12CDF | 10960 bytes |
font_02_sfnt_off000145c8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x145C8 | 16792 bytes |
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