MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of external links, many of which point to compromised WordPress upload directories. The ML classifier and ClamAV both flagged this PDF as malicious, indicating a phishing or trojan distribution attempt. The primary attack pattern involves directing users to potentially malicious content hosted on compromised sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9924
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://simondaulte.com/ckfinder/userfiles/files/valurebo.pdf In PDF document text
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/70vbcsigedlbuik38hcl3u4257/54670688086.pdfIn PDF document text
- http://helder-effect.nl/userfiles/file/67794607898.pdfIn PDF document text
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/55d0eb22b19e0f9c10dfdc5f49e776ed/fujinubewipuliko.pdfIn PDF document text
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16088eaf03aadc---6619632643.pdfIn PDF document text
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160746601b2e41---gemusuguxatugibuneg.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/jifukapisibodo.pdfIn PDF document text
- https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/e03be31452fbb65f1c82bb91399dd88f/68723183362.pdfIn PDF document text
- http://lamekatus.ee/uploads/ckeditor/files/kaposeziwitusabokasawep.pdfIn PDF document text
- http://uk-finansist.ru/userfiles/file/34589375776.pdfIn PDF document text
- http://airconbank.com/upload/fckeditor/file/39897402600.pdfIn PDF document text
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16075cff17a5d2---nijunifujolozomorul.pdfIn PDF document text
- https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/0f6e49c8f9f3b580388b3ffaab150ccf/28445898782.pdfIn PDF document text
- http://vyveva.eu/UserFiles/File/91766940599.pdfIn PDF document text
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607378e6ef9c2---fefinedow.pdfIn PDF document text
- https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/12a87bb39d10ecd0bbcdaa021855f709/6965126431.pdfIn PDF document text
- http://intestinalfortitude.org/clients/0/0c/0cf504f131cb0201443a7bd449519f4a/File/rikojofekewepobijipev.pdfIn PDF document text
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd5df44446---26826175959.pdfIn PDF document text
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085ff7615d37---6911542953.pdfIn PDF document text
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607b70b11ea0e---gejij.pdfIn PDF document text
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/9ppa397atuahk5hd8s67huuk03/tikovobivokalitupi.pdfIn PDF document text
- http://albatrossmrn.com/konadnew/userfiles/file/wiforexat.pdfIn PDF document text
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/ui6ttb5gsjdppsd16tkobdsge3/lupuranivugobuja.pdfIn PDF document text
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/8b03a395056a71e863646cf961f8e125/26353787992.pdfIn PDF document text
- http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/4ad3a903e501ab1943060017e34e82b0/rijanufeduzonam.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=7th+class+maths+questions+and+answersPDF 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001056a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1056A | 1780 bytes |
SHA-256: ee6d8c25003eb2de61ee1fda640ec7b8e4605923364b71ee832b966c85f0f81c |
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font_01_sfnt_off00010dc9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DC9 | 17140 bytes |
SHA-256: 34a64b5ee669b2e512b56836548621b7a1fed3c65432deb4effb4f10a3e61145 |
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font_02_sfnt_off00013ac1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13AC1 | 10920 bytes |
SHA-256: 05f8305238436ecde0ad83bc2a3f8bee86f21bb3829a3bc453f73f14d02f6280 |
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font_03_sfnt_off000153c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x153C0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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