MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics and the ML classification strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://laborke.ru/uplcv?utm_term=landed+cost+calculator+excel+free+download
- http://lsphc.com/userfiles/file///poronulefedotewu.pdf
- http://www.motionmantra.com/userfiles/files/kosolabokivokebon.pdf
- http://petra-dario.info/upload/datoteke/3381897802.pdf
- https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/2b2dcd34ea4bbfb8005ba27d7531ffe3/5960829654.pdf
- https://gabconstruction.com/ckfinder/userfiles/files/71464302140.pdf
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608755bdc5084---lebisuja.pdf
- https://jordan.si/dokumenti/file/64518916511.pdf
- https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/ad67e3672281f213156b3ab8209bd173/19179444274.pdf
- http://www.anieliasfx.com/uploads/textareas/file/26628847078.pdf
- https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16082ec2fca07c---57102394531.pdf
- http://www.centralperdana.com/file/kogexonebudeser.pdf
- http://sbnjl.com/userfiles/files/73515098344.pdf
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b753984b52e---14433611613.pdf
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160abe5ebb2f35---32533069040.pdf
- https://rubenoferro.com/userfiles/file/98400305220.pdf
- http://soepcentrale-dekeyser.be/userfiles/file/pivosenux.pdf
- http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160782835a3796---3840385915.pdf
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a8f3273dd0---4163578479.pdf
- http://svaz-podnikani.cz/files/file/dibavewomese.pdf
- https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/nsenmdfkcec79q2v53s2ndeflj/32621425310.pdf
- http://sochi-vitrazhi.ru/ckfinder/userfiles/files/52733158934.pdf
- http://versobrokers.eu/userfiles/files/norisuxepuwol.pdf
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/72gaijeadlmc6vlaa9t9n7blek/xiluvowe.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_off0000e5ed.bin32e44a397a14b9b50831d8fadc8462935516427c6339481c6edc3a65e50d849a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5ED | 16492 bytes |
font_01_sfnt_off000110e3.bin4a64d04be6c79bc4a712ed6a6427d4db5fe83c100c5f53eec1baca332f416bba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110E3 | 10620 bytes |
font_02_sfnt_off00012965.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12965 | 16792 bytes |
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