MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, suggesting a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The primary attack pattern involves leveraging these links to deliver a secondary payload or redirect users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606e60916f84e---35860054904.pdf In PDF document text
- http://tatugigo.com/ckfinder/userfiles/files/78888978733.pdfIn PDF document text
- http://www.celso.org/download/nedebuduxum.pdfIn PDF document text
- https://www.southdownscellars.co.uk/ckfinder/userfiles/files/dakisiresaditemakib.pdfIn PDF document text
- https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/5761ac289699d9d29a285de5641103d9/68690711450.pdfIn PDF document text
- http://steakclubhn.com/campannas/file/96738319255.pdfIn PDF document text
- http://stolizstekla.ru/userfiles/file/50560252434.pdfIn PDF document text
- https://ecohort.com/userfiles/files/derifezonakusigozopuka.pdfIn PDF document text
- http://ansing.nl/userfiles/file/titisisixujewazogizafuzu.pdfIn PDF document text
- https://moveo-sport.pl/userfiles/file/tunifevomave.pdfIn PDF document text
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609039fec848a---xozovip.pdfIn PDF document text
- http://yaqeen-eg.com/userfiles/file/85268186212.pdfIn PDF document text
- http://ctkupavna.ru/upload/file/lutukudubegerapi.pdfIn PDF document text
- http://thevelascofamily.com/clients/11614/File/goteforidanu.pdfIn PDF document text
- http://evpltravel.com/xv_image/file/272694831.pdfIn PDF document text
- https://momsgardenfoods.com/ckfinder/userfiles/files/zakususukiwobeka.pdfIn PDF document text
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/bb6c51f3bd296150aa980da8539f6b28/2059462297.pdfIn PDF document text
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e174fbe789---pafokijilumaxelubizir.pdfIn PDF document text
- http://cipetbhopal.com/webimg/files/wexajaradefa.pdfIn PDF document text
- https://brahmagnanam.org/fck_uploads/file/dolobitepifenewimol.pdfIn PDF document text
- http://jiuxingchaoshi.com/uploads/file/310850474575.pdfIn PDF document text
- http://giustizianuova.it/userfiles/file/38878332230.pdfIn PDF document text
- https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/9788a1fdb76f6c367391b414d8b4c1d7/ranomuvedanijituv.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=solid+waste+technology+and+management+christensen+pdf+downloadPDF 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_off000119f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119F5 | 11340 bytes |
SHA-256: 067bfacab63b3a65768221dfb24b6070b8a6aa590824c5f5d7b39547a4b19d63 |
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font_01_sfnt_off00013443.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13443 | 16920 bytes |
SHA-256: 1aa83bad7623442d399a70c908de0c7d06385925503335e6a96078b97cac5d96 |
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font_02_sfnt_off00015fd9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15FD9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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