MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised or disposable hosting sites, likely to distribute further payloads or conduct phishing. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis strongly suggest malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9860
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://ngocvietbungalow.com/upload/files/63692230451.pdf In PDF document text
- http://geteffective.biz/uploadfiles/file/49249593775.pdfIn PDF document text
- https://perfecthospital.net/FCKeditor/file/36891911674.pdfIn PDF document text
- http://gibisch.biz/files/files/22646458492.pdfIn PDF document text
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607996e879203---nitomavukifapojeloluso.pdfIn PDF document text
- https://prokoncept.hu/admin/blogfck/image/file/57972528203.pdfIn PDF document text
- https://dodatnojamstvo.com/userfiles/file/wirepelutonaputaxosol.pdfIn PDF document text
- http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a1402132728---xemokegotaz.pdfIn PDF document text
- http://www.moyekolodin.com/files/2485977689.pdfIn PDF document text
- https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/t2e75inai8b19kare4va43sjnh/dagovujufapuxisezuwobod.pdfIn PDF document text
- http://dailymaydemtien.com/userfiles/files/23070212097.pdfIn PDF document text
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720eb978002---zozovomarinewutoxanun.pdfIn PDF document text
- https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/377bf7d2f3bdb90de0574695a9ad5925/28818519019.pdfIn PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16080a5d9e3694---vinimijek.pdfIn PDF document text
- https://baongochoa.com/upload/file/23757498144.pdfIn PDF document text
- http://alexhoffordphotography.com/temp/files/file/99386161555.pdfIn PDF document text
- http://tsmsaldature.it/userfiles/files/3181632385.pdfIn PDF document text
- http://chieusangducphat.com/uploads/userfiles/file/womowolidiwenu.pdfIn PDF document text
- http://jr.ac.th/ckfinder/userfiles/files/rexolukexa.pdfIn PDF document text
- https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/03392f44e6667d4a3794205edb10eac1/nipibasemeninuvov.pdfIn PDF document text
- https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/nqeudm8ff369rucjssqt1k0l0u/43409902707.pdfIn PDF document text
- http://italiancousins.net/clients/5/54/54f3d33123424807706abe9154268524/File/5345395793.pdfIn PDF document text
- http://sonkertrail.org/clients/9/92/9260a3c387aed4615f72c72c3a1da295/File/15763594728.pdfIn PDF document text
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f1c9ea9e15c72f132d66e84c6a5a90dd/reraz.pdfIn PDF document text
- http://csc028.com/userfiles/file/20210821021017_fwircw.pdfIn PDF document text
- https://stef-nancy.fr/upload/document/90310641528.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=sangai+express+manipuri+edition+today+news+pdfPDF 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_off0000df80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF80 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f797.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF797 | 11272 bytes |
SHA-256: 4ba45e333b7d12496e48e3d31741bf7824291c6e15d2dbbd42005fe6fdb56ff5 |
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font_02_sfnt_off000111eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111EB | 18628 bytes |
SHA-256: bd59d4ec3a923f3f00e145c82831ef06384b2aa79b699ecd0259f53cd4206ae2 |
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