MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs pointing to compromised WordPress sites, suggesting a link farm used for phishing or distributing further malware. The PDF structure and embedded links are consistent with a spearphishing attachment attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://coretry.ru/uplcv?utm_term=recommendation+letter+for+director+position
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160982e03b9bf6---40477570888.pdf
- https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/6634c06a65e6d749528d14bd90f92c6f/berovebe.pdf
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe1091d98d---pupuxagonanubesisifan.pdf
- https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/980fcf61d1b52035133d1386127c33b2/14190423263.pdf
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926a2334ea6---fipafiluwenek.pdf
- http://emeraldoutback.com/clients/f/f6/f61299a274fa8fdb0c00f5b1ed511d42/File/sewonukar.pdf
- http://nhs1966reunion.com/clients/1/1c/1ca8f1639ee69cd7806809ed3bcda9bb/File/dafogut.pdf
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086fd680d650---29124294970.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883c6b0064f---36789957890.pdf
- https://aduanaldelvalle.com/userfiles/file/vakatosexivu.pdf
- https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/erns1qc7m24stn5bbs6skkr46v/83690880089.pdf
- https://medsplus.us/admin/images/file/zuwuwulaz.pdf
- http://sinhorelli.com/userfiles/file/24490200884.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b4937690cfd---75930209984.pdf
- https://olterus.com/contents//files/66434763988.pdf
- http://bukharasuwanee.com/sites/default/files/file/pewivorubamogitizaro.pdf
- http://www.alfapilates.pl/upload/file/viruweruxewofijalomeb.pdf
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/987cfd7e3671117d3c1cb694b1058eab/78005232607.pdf
- https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/7a55ee205e08be3bbd6d87a0bcda11a7/vebesuxeduvofibefusavon.pdf
- http://abwingssuffolk1.com/uploads/files/11591735240.pdf
- https://heks-tech.com/app/webroot/userfiles/files/43771966817.pdf
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2302e40c69---23100411310.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/aa49c843f7a13682a2b13a18efe5e0e4/nejekosasusajonugawowano.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cf661d2ad---pesovoxudatedale.pdf
- https://sardavetri.it/userfiles/file/91683503953.pdf
- http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c5f1af98695---26427419623.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_off0000fd77.bina973eccb5c08e14b705c1241b25d5d7598e930355c8dbe8ae8c9c356829c8a9c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD77 | 16756 bytes |
font_01_sfnt_off00012807.binff06b671ee104a40de1a3752b81401c97aa393938f2603d5f254975facf2b70b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12807 | 10824 bytes |
font_02_sfnt_off000140f6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x140F6 | 16792 bytes |
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