MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file flagged by ClamAV as a phishing trojan. Static analysis revealed numerous links to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier also indicated a high probability of maliciousness. No scripts were extracted, but the presence of multiple external URLs points to a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.7684
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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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://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c48328f1970---paviga.pdf In PDF document text
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/7e0ba732ce2d51c8fda9f4b0b8a2a920/70447666647.pdfIn PDF document text
- http://veterinarioassociatopacinidallatorre.eu/userfiles/files/4005147842.pdfIn PDF document text
- http://hoggard1975.com/clients/a/a4/a43fc1111b7ad4318f8b553feb79a890/File/rosoji.pdfIn PDF document text
- https://agrocare.ro/ckfinder/userfiles/files/nulevalejeledowude.pdfIn PDF document text
- http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/temetavagetosufamazomi.pdfIn PDF document text
- http://frutapacargentina.com/ckfinder/userfiles/files/66249801642.pdfIn PDF document text
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/cc32fv1k7gqria95k5n6hdev9g/3041322828.pdfIn PDF document text
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/0841cbd0d91dc59c854909b9fdbad9f4/2265258527.pdfIn PDF document text
- https://marblobaths.ph/app/webroot/img/files/212196268.pdfIn PDF document text
- http://doverhighschoolhalloffame.com/clients/2/2d/2d76883e1086210ef8e2c43836b0327f/File/zaboxufikobeto.pdfIn PDF document text
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160968afa81b25---domosubu.pdfIn PDF document text
- http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16090b8823acdb---82410342689.pdfIn PDF document text
- https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/ae6ae431609ce75f901b17b932f9b33c/19236386994.pdfIn PDF document text
- http://animalscipublisher.com/files/upfiles/file/jafuxevi.pdfIn PDF document text
- https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607734936f3c9---wenorim.pdfIn PDF document text
- https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/9c04qavdcbuqq23jkkn6hcvouv/93507810191.pdfIn PDF document text
- http://tokyosushilohaus.com/uploads/files/muwizat.pdfIn PDF document text
- http://venturahigh1967.com/clients/40640/File/32568587806.pdfIn PDF document text
- http://oio.cn/uploadfiles/files/jifaju.pdfIn PDF document text
- https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16079e0c4e186a---zamukutimiv.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/ef2ghi7r71pdk39um1s7ob5ulm/18402545339.pdfIn PDF document text
- http://rucodelniza.ru/userfiles/file/83118927317.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=17th+century+double+reed+woodwind+instrumentPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00015088.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15088 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001689f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1689F | 10920 bytes |
SHA-256: 3eaf1a71b43c79dd20e592517c975dbeb731d58039bed41e481f4a7132aa6147 |
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