MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate a pattern of hosting numerous links on disposable or compromised domains, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://krisoc.ru/uplcv?utm_term=how+to+install+densshield+in+a+shower
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/3hhtu70gtfv8mvqa3fcs678v01/69708904078.pdf
- https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/874iuohts0b3dqf53i2kire3qd/60175346428.pdf
- http://sumterhigh89.com/clients/863574/File/tinukeni.pdf
- http://acpiindia.com/userfiles/file/tugomon.pdf
- http://closehorses.com/userfiles/file/68976385700.pdf
- http://thecoferfamily.com/clients/7/78/7892d776c92a08c80f86ebc6236678d2/File/lemegomitesujo.pdf
- https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a08c8a7a94c---66550358265.pdf
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/623fb4ec694cc48d3153ad4791601a76/3487067075.pdf
- https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beb5e04e2c0---5421286108.pdf
- https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d1965de41---firogagowazofaw.pdf
- http://lumieretvie.com/userfiles/file/zibogizaponapubileja.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077f0cb53e53---94804728379.pdf
- http://adamlegal.com/userfiles/file/8233851109.pdf
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607665a6c82f3---86702383825.pdf
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc843790ce---jinamawiti.pdf
- http://zjhywt.com/images/upload/File/95958191675.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aadfe61073a---81603918120.pdf
- https://xosobacninh.vn/webroot/img/files/rofofitexiv.pdf
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/rtljq1dkkbmsi4svn5nm8aiq66/23475915278.pdf
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b6200d6db---rimezasanozagibulufagino.pdf
- http://meskerjager.nl/media/files/75633590609.pdf
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aba5259b728---xelovijanukubevakoko.pdf
- https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/395a2f57664aee2cd312c9efc8ed0a84/dejebixuxi.pdf
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/7aba5902ba88dea68e7e4f07fd2b380e/dabasux.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_off0000baf0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBAF0 | 16792 bytes |
font_01_sfnt_off0000d302.bin209fad53211f5f67f7435e6208f4fdf9180d50f0e8cdb9a89308ed994fed993f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD302 | 15420 bytes |
font_02_sfnt_off0000fa95.bin8f505ac118eeac8282d86a5a3a54d643459ed9637ff84bb48477b03d96637eb0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA95 | 10420 bytes |
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