MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate the PDF acts as a link farm, directing users to multiple compromised websites, including one hosted on a compromised CMS upload storage. The presence of numerous unknown URLs suggests a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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://nslogisticservice.com/userfiles/files/47665630861.pdf In PDF document text
- http://bangtutrang.com/upload/files/93751797781.pdfIn PDF document text
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c59f1433641---zabiwe.pdfIn PDF document text
- https://btsmstlucia.com/atomicsteps/upload/userfiles/file/daporas.pdfIn PDF document text
- http://oletrans.sk/editor_uploads/files/letonedefasogozedam.pdfIn PDF document text
- https://ovistar-dz.com/ckfinder/userfiles/files/95001094979.pdfIn PDF document text
- http://bhk-aindling.com/userfiles/files/dajabovosawepomoluxubawum.pdfIn PDF document text
- http://falerisztika.hu/tmp/pibeziko.pdfIn PDF document text
- https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/62745e956fb01b49fd5924ebe1730eee/wesumolipitites.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16079985da053e---59278740273.pdfIn PDF document text
- http://nguoigiupviec99.com/webroot/img/files/derisitonubudabed.pdfIn PDF document text
- https://traiteur-troyes-mariage-buffet-aube-10.blaisot-traiteur.fr/ckfinder/userfiles/files/32642304378.pdfIn PDF document text
- http://plnjl.com/userfiles/files/pirebezujamizufa.pdfIn PDF document text
- http://naasschoolofmotoring.ie/fckeditor/userfiles/file/57796494855.pdfIn PDF document text
- http://mobilephleb.com/clients/2/2d/2d2188d13063160162e6e2bbcdac547d/File/lumoralob.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/6c61e5cc3416af6c05753137927d523b/1232944316.pdfIn PDF document text
- https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/dde9b05cb43cd6135a7d706011651d59/50078707370.pdfIn PDF document text
- http://starcity-vinhomes.vn/app/webroot/img/files/felib.pdfIn PDF document text
- http://www.prctech-th.com/ckfinder/userfiles/files/puguxujilikaxut.pdfIn PDF document text
- https://wietsevoermans.nl/ckfinder/userfiles/files/tobujafamu.pdfIn PDF document text
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/f8fbda5ec13a061d58079d14316dfea2/lidigufesuwutojor.pdfIn PDF document text
- http://eng.sut.ac.th/tce/2016/administrator/ckfinder/userfiles/files/59413154330.pdfIn PDF document text
- http://elliptical-trainers.ru/ckfinder/userfiles/files/18957865485.pdfIn PDF document text
- http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc20aff3742---musijiputinabuzul.pdfIn PDF document text
- http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16083326f43124---mizezatijadatukose.pdfIn PDF document text
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607597a26d788---zefokixesa.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=peter+thiel+from+zero+to+one+pdfPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f5cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5CC | 17208 bytes |
SHA-256: 49584d79718a3734317026626f6371ad82a197d89ad83a545585ed8c9825fd4c |
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font_01_sfnt_off000122a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122A4 | 10496 bytes |
SHA-256: 774e1527e8bf254b3a986f0f72849bac90466a2fa1eef71e67b6c7a7261be630 |
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font_02_sfnt_off00013a3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A3F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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