MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, directing users to multiple URLs, some of which host further PDF files, indicating a potential multi-stage attack or phishing campaign. The presence of multiple compromised CMS upload links suggests an attempt to leverage legitimate but compromised infrastructure for hosting malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
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://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/b938e24e8cbc831a6c6dbcc1ffbe3ab5/23319275638.pdf In PDF document text
- https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/39969ced0a11dbece269b88418e96b4c/rabakusilosepopaj.pdfIn PDF document text
- http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a62ab116c7---69032937417.pdfIn PDF document text
- http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608749a20b303---lodagubokilizoxos.pdfIn PDF document text
- http://patrick-jardinage.fr/ckfinder/userfiles/files/muwulapeluxavomerejogow.pdfIn PDF document text
- http://cedule-plachty.cz/files/file/jineboraworuwajaj.pdfIn PDF document text
- https://arbormaster.net/uploads/files/17784385152.pdfIn PDF document text
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/fa21106d680997a513ced465a7bb8f1d/31901853421.pdfIn PDF document text
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a56c5a94ffb---75562459816.pdfIn PDF document text
- http://ligonfamilyreunion.org/clients/9/9a/9a44987365eba454cd9b2deda39aa7c0/File/9858716873.pdfIn PDF document text
- https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/ct75nbbs97vrv46cfsfaof40m5/24784083925.pdfIn PDF document text
- https://alves.bg/ckfinder/userfiles/files/rekumerotasuvi.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608009ace73fb---felokimed.pdfIn PDF document text
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce6b264603---dujejanawopulamuvuzar.pdfIn PDF document text
- http://braciszewska-klimek.pl/fck_files/file/69359809836.pdfIn PDF document text
- http://lacyfamilyunity.com/clients/2/20/203fd950dafdada58ea32e7b96f0d147/File/8925885121.pdfIn PDF document text
- http://jyjjapan.jp/files/ckeditor/files/fazamibusagawodigukuli.pdfIn PDF document text
- http://pamatudarbai.lt/ckfinder/userfiles/files/20890249001.pdfIn PDF document text
- https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081e8b2568ef---ramisa.pdfIn PDF document text
- https://rybczewice.pl/userfiles/file/81042364503.pdfIn PDF document text
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a1175d52c51---5183598039.pdfIn PDF document text
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/ac020833ec69ad1cb8afaf160cfd9344/rifixotinogubikud.pdfIn PDF document text
- http://netinflux.net/userfiles/file/bimazo.pdfIn PDF document text
- https://abofahed.com/userfiles/file/52066744015.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=example+of+pie+graphPDF 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_off00010867.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10867 | 10520 bytes |
SHA-256: 7359e3a6dee7927817ba660bdb7139243f86dabcf7c72a2d1eb7f3227005d632 |
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font_01_sfnt_off00012046.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12046 | 16848 bytes |
SHA-256: 0a7390c1eae0e2a74dd1803f4d42423e74ce37fa35ebf920ecdad440c0aba37d |
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font_02_sfnt_off00014c6e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14C6E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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