MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised WordPress upload directories and other disposable hosting sites, likely to download further malicious payloads. The presence of numerous external URIs and a link farm structure strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 http://jtylek.pl/Upload/file/dezifawez.pdf In PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/04ccb7fc7cc89fafa45cc91148ffd9e1/juvarasumilofanorupezid.pdfIn PDF document text
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/ea48137875c746475909ca3a8373a3ff/47868417436.pdfIn PDF document text
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c9a945ff2---66645569686.pdfIn PDF document text
- https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/e2311281903b6e3616b0858ababf60fd/48522912563.pdfIn PDF document text
- https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/a1a7fe11191fd02d09bf1ffeea7f81c5/6297800479.pdfIn PDF document text
- http://karthikeyanjayaram.com/userfiles/file/rovamikulamojoj.pdfIn PDF document text
- http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/8l2voqrnhac3rtdkness118t26/pebuzajagevexetobusuwivo.pdfIn PDF document text
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/641aa8e56531ab56833db90279a143e3/zezajarater.pdfIn PDF document text
- https://condominiobrisasdelnorte.com/userfiles/file/75889106250.pdfIn PDF document text
- https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/9s5cnstatrp8j2d3h7jf5bgbv3/57389382368.pdfIn PDF document text
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ea8e41bd6---dowukoxo.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad2582f2b2---63119094404.pdfIn PDF document text
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/af9iugvrcm4lvagiebnsu4hfj2/68253969124.pdfIn PDF document text
- http://magnachip.cn/userfiles/file/20210519115758.pdfIn PDF document text
- http://dolphinkorea.com/files/files/46635448159.pdfIn PDF document text
- https://kurek-rowery.pl/user_pict/file/5483519795.pdfIn PDF document text
- https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/a9c0a667ab3d6108f0db7d363d78e928/55062890003.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/6tl7p42cr8vd2qssajni4d80pp/4327294903.pdfIn PDF document text
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/eafd1f4294097dd01893d852d2b789ad/zetafutu.pdfIn PDF document text
- https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/475af0bd6c924c7cda50b369772d7854/40993910948.pdfIn PDF document text
- https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/be92a548aa1ff0f71187f1c933eaf39f/wasadepataneluxateb.pdfIn PDF document text
- http://muzycznescyzoryki.pl/userfiles/file/2875694471.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608325093f941---zogitabapu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=12+pounds+in+kgPDF 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_off0000f2f1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2F1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010b03.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B03 | 17128 bytes |
SHA-256: 360d99a82afe4bdd560458e2e7f8fa9275e703fbfcd772b9539d7037a5e55c52 |
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font_02_sfnt_off00013755.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13755 | 10296 bytes |
SHA-256: a6d963e22d5784a412f0c9a72ceb457fa1e0458c1f4c4215b4e83c68a75248e4 |
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