MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution scheme. The presence of a 'bruno stair lift manual' in a URL parameter indicates a lure to trick users into downloading potentially malicious content. ClamAV detection and ML classification further support its malicious nature.
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=bruno+stair+lift+manual+pdf
- https://autoroman-service.ro/imagini_ws/sijufosituxebegeruv.pdf
- https://charterboatdeliverance.com/uploads/files/zosanepomubuxuwonukil.pdf
- http://www.alexgis.com/siteuploads/editorimg/file/vipanivefefo.pdf
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/a730a8e6da8ff475d0c2e86a44c931df/88762331675.pdf
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/119dcf0d537d5ded78affe9525477cc7/53481125993.pdf
- http://allasclub.com/campannas/file/4703894158.pdf
- https://highrise.pl/file/73936500196.pdf
- https://areicon.com/images/file/28290061618.pdf
- http://didula.com/img/file/voferijezatadinemajonu.pdf
- http://ibb-online.ru/f/file/baduvajiganurutogepamag.pdf
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c17872346---42056696315.pdf
- http://grandviewgroupresort.com/upload/files/nafibajatipamujaworab.pdf
- https://infrastone.com/userfiles/files/98523969909.pdf
- https://annjulieskarpmo.com/userfiles/file/49879328639.pdf
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607af532e51cb---vagofudatazabonam.pdf
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/cd7405e96daa21b689c916f2b5f5eae0/28444099151.pdf
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/c2e6aa915a07ac2a199514b5920a1b3c/sitejim.pdf
- http://pro-elec.ru/ckfinder/userfiles/files/5160963258.pdf
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160f7c2d465499---sixibaruzuludi.pdf
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc814cd31d---77913511005.pdf
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8080709135---wopirurop.pdf
- https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/219228658ba5ee7833bcddd9f7603c7d/zemosagewoxitawotisabanux.pdf
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/db97d8d652e12a56c8fd5db3c86143fd/sonolelafezorade.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_off000105ec.bin2c85890b64a7d639ecad92014538c7e1520bc3618a1a18ee6bfcfb5e9b399520 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105EC | 16768 bytes |
font_01_sfnt_off0001318a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1318A | 16792 bytes |
font_02_sfnt_off000149a1.binad002ef4112348aa544ca8b8632da44c8df34d92be1104a93b32f0aac19fb4d7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x149A1 | 10680 bytes |
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