MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to disposable hosting or compromised CMS uploads, suggesting a phishing or malware distribution scheme. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically highlights the non-clustered link farm nature of the document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 http://phuketdriveschool.com/userfiles/file/nafirepufukesabiv.pdf In PDF document text
- http://waycreon.net/bhaskar/yii/upload/files/35560642966.pdfIn PDF document text
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132a696a075e---jorezob.pdfIn PDF document text
- http://webursitet.org/Files/file/22925923681.pdfIn PDF document text
- https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/825bd13c418dc601cdadff1aa7ff0196/pezuvepisibozurup.pdfIn PDF document text
- https://www.institutvzdelavani.cz/files/nikeduguwepetoruw.pdfIn PDF document text
- https://yarpaket.ru/userfiles/file/83214833125.pdfIn PDF document text
- http://klientskazona.radeton.sk/ckfinder/userfiles/files/93665372604.pdfIn PDF document text
- http://dolekkoyum.com/admin/UserFiles/file/8615650076.pdfIn PDF document text
- http://kunmobile.vn/files/uploaded/20210920/file/73968041099.pdfIn PDF document text
- http://tavaszitura.eu/userfiles/files/kejekafejidawebevijan.pdfIn PDF document text
- https://hitourkorea.com/FileData/ckfinder/files/20210905_8D85DEE0B26E614F.pdfIn PDF document text
- http://uforoi.com/app/webroot/uploads/files/43837045083.pdfIn PDF document text
- http://anpo.vn/upload/files/puzibakabezemevinutugud.pdfIn PDF document text
- https://fnb-concepts.com/images/uploads/files/dakijirobugolosadepuralol.pdfIn PDF document text
- https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/b87b01ceed449a1134ab6fbe4d57a7fa/57124397143.pdfIn PDF document text
- http://abbuffalowings.com/uploads/files/tenemabobasagejezum.pdfIn PDF document text
- https://sofupingame.net/calisma2/files/uploads/dusibazigakuwukijozakoj.pdfIn PDF document text
- https://uclerbaklava.com/resources/file/kixapat.pdfIn PDF document text
- http://zkmeiqi.com/admin/ckfinder/upfile/files/45708442734.pdfIn PDF document text
- https://igruppe.no/ckfinder/userfiles/files/78659826782.pdfIn PDF document text
- http://eltprof.ru/userfiles/file/47158158346.pdfIn PDF document text
- https://xn--atpta-nfb.lv/images/userfiles/files/revabemudejibajekizuwuk.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=pes+16+download+for+androidPDF 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_off0000b0b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0B4 | 17948 bytes |
SHA-256: 2540fee4f3742cb3794585c1d22c7b739a273971bf33d9b99115add470d36ec0 |
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font_01_sfnt_off0000df20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF20 | 10556 bytes |
SHA-256: 84cd66c083b5eb0fb4df8b17e6ea283a78ed9e553077806bdaa380211050ab36 |
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font_02_sfnt_off0000f77b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF77B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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