MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to various PDF files hosted on disposable domains, a common tactic for phishing or malware distribution. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a method to bypass gateway security. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://xn--z4qq44i.xn--kpry57d/upload/actfiles/72499117553.pdf
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/kt9cmpgotmqi15qd2isi4n81j3/nesatezogijorara.pdf
- https://www.icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/5036259351.pdf
- http://rts-3.ru/upload/files/14687769703.pdf
- https://icoachyou.biz/images/ckeditor/files/57902250157.pdf
- http://dealershop.es/userfiles/file/tinag.pdf
- https://glory-aqua.com/userfiles/file/13757004920.pdf
- http://belniig.by/public/file/57712075352.pdf
- http://asavn.vn/uploads/userfiles/files/wuzate.pdf
- http://bradzo-ep.com/uploads/files/31538724577.pdf
- https://wonwon.taipei/photo/file/33061638488.pdf
- http://criminisiepartners.it/userfiles/files/deludo.pdf
- http://tksvolga.ru/userfiles/file/vokevizaborujafalawasum.pdf
- https://elminhaj.org/userfiles/file/4511485226.pdf
- http://a-aqua.fr/ressource/site-image/files/87706965762.pdf
- http://slxiang.com/v15/Upload/file/2021910344189535.pdf
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e45264d36---getomazus.pdf
- https://vanphongphamhienluong.com/upload/files/vetiketujasekot.pdf
- https://www.blondel-bois.fr/ckfinder/userfiles/files/98441074059.pdf
- https://congthuonghotel.vn/app/webroot/files/images/pages/files/pajojij.pdf
- https://shellserva.nl/docs/Image/file/82980435537.pdf
- https://leosservices.com/userfiles/file/57446592805.pdf
- http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/viwakagazesi.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161421ed591f5c---27554729379.pdf
- https://tsolisp.com/files/file/gogerawepimobabamufaru.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=free+v+bucks+hacks
- 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_off0000cc20.bin711650b54530b017e4cf34c2e341342a6eb7e471d4e0d48a2559866d3cf92157 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC20 | 10240 bytes |
font_01_sfnt_off0000e34c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE34C | 16792 bytes |
font_02_sfnt_off0000fb5e.binf4a449db09e77e861004ed7fc3d313694adbefdb63bae7f8fe12384e07febc70 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB5E | 17472 bytes |
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