MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using such links, likely to obscure the ultimate destination or to spread malicious content across multiple sites. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or trojan distribution intent. No scripts were extracted, but the structure and URL patterns are indicative of a malicious lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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://oniceh.ru/uplcv?utm_term=how+to+activate+windows+8.1+without+product+key+64%2F32+bit+free
- http://www.gyndoktors.de/ckfinder/userfiles/files/69465302587.pdf
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16094dc4d55a97---waguzelupugajugijaluta.pdf
- http://studiocalderini.it/userfiles/files/wuweger.pdf
- http://degeninhotel.ru/admin/ckfinder/userfiles/files/29289254210.pdf
- http://sonkertrail.org/clients/9/92/9260a3c387aed4615f72c72c3a1da295/File/20636008675.pdf
- https://ludifrance.fr/userfiles/file/65762601799.pdf
- http://bjallstar.com/upload/file/16027143435.pdf
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/pn0bpvjjsjbpkc0b51g4a3kh26/19565411534.pdf
- http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/92769359332.pdf
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/8d887faccdf3c378c3fda784c528a653/22844236102.pdf
- http://bhs-class1957.com/clients/35434/File/sizetuvegurodifomurepuwan.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/li7ptraufldl9du7k609792ae6/50077649044.pdf
- http://blankheich.de/images/uploads/file/36534535720.pdf
- https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/15c967b0c012cbb2ae49605f92c32b7e/96299524008.pdf
- http://hondaotohaiphong.vn/upload/files/jilititezabawiliguzoxop.pdf
- http://xn--kprq5pvqklteonubj6c.tw/CKEdit/upload/files/kigaxexuwosif.pdf
- https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/hsh8t2t8hrl4s0f70r1f8vrf7f/tejuz.pdf
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/unt4lfad7u6nb15fsgo8k8i5qt/kojisezaliwusote.pdf
- https://ewdel.cz/ckfinder/userfiles/files/82211860679.pdf
- http://gps-tw.com/CKEdit/upload/files/netoguneviripapisuj.pdf
- https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/ab9c73ad3def291f30fb84fb4bdfcd57/13277365304.pdf
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee5fd242735---33335094852.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ed38.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED38 | 16792 bytes |
font_01_sfnt_off0001054a.bin71f8c415123c14424036c3159efcd9803cc5330302d9ffce27bab07dfcc8be98 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1054A | 16840 bytes |
font_02_sfnt_off00013163.bin30b5f02fed6b3ffa502b9d426d1ea0a95a446c49f232de0824ff323a123681a1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13163 | 12160 bytes |
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