MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links pointing to websites that appear to be compromised CMS uploads, indicated by heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The embedded URLs are the primary indicators of compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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=network+security+and+management+pdf
- https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/aadcc257b84691484a2c87d9859c30d6/vozuwubavabovipikigux.pdf
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0fc9dccc3---pefakibireje.pdf
- http://bogelaipigeon.com/upload/file/51815986153.pdf
- http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7d6768dc5---1713197660.pdf
- https://cortopolis.ar/userfiles/file/nefoj.pdf
- http://biodent.ro/m4fm_files/m4news/ck-uploads-files/11428148839.pdf
- http://stepasidemedical.com/images/uploads/file/wukelovidumedovev.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607cba162bd5f---jobegokurewarif.pdf
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f727b96024---21241357674.pdf
- https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/51add9d9425da920cf3be5e7a558f076/34421204780.pdf
- http://massageindex.nl/images/uploads/falumus.pdf
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/0e353c1d4574adc0f89fa87d1af80bf2/mibosozo.pdf
- http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/20216181827412962.pdf
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/e59nohvs70tu504mqf8mn244bs/wufijapubewutimezumalap.pdf
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb566a7538---82741196344.pdf
- http://aroma-es.site/yamituki-n/uploads/files/lojomiw.pdf
- https://ambalatender.com/upload/files/9393681832.pdf
- http://partnerplus30.ru/images/fornews/files/xofajuta.pdf
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/9e0f6b64a3f8cd5715833f086060425f/jefomedugijomebene.pdf
- https://open-call.fr/uploaded/files/roboginumotixuxuxafewegog.pdf
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/lobasgglgpnpr3b3v993qgve6p/belipowugakerax.pdf
- https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb99a8e29d---40778593823.pdf
- https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/ac6130f2bd4f0a0f5de634d68c34a1ff/bejoleravesi.pdf
- http://mispuntossaga.com/campannas/file/lidonisajepuretovilap.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_off0000f9b8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9B8 | 16792 bytes |
font_01_sfnt_off000111ca.bine412eb7717ab6d853150c531871ef570894edc1115f6539441746114077066da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111CA | 17848 bytes |
font_02_sfnt_off000140f3.bin9ad4f8043ed1c5aef3519bf53f0716b9682c891dd684fea4f78bcda3f9196257 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x140F3 | 11284 bytes |
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