MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which are part of a link farm hosted on disposable or compromised domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.
Machine Learning
- Nyx PDF Classifier malicious score 0.9940
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://chcial.ru/uplcv?utm_term=gta+iv+tbogt+cheats
- http://mictrogiang.com/userfiles/files/vekudiwako.pdf
- https://mokhalasati.com/userfiles/files/67817420838.pdf
- https://pragatitic.org/ckfinder/userfiles/files/7905780398.pdf
- https://artlabjo.com/userfiles/file/fejikefitotimaso.pdf
- https://ruxthai.com/ckfinder/userfiles/files/jonatimude.pdf
- https://menu2uplus.com/images/file/97528532139.pdf
- http://athaj2.specialty-match.com/upload/files/bavuxifadira.pdf
- http://mrpennarak.com/user_file/file/17773992295.pdf
- https://trade.inter-ural.ru/ckfinder/userfiles/files/85686164538.pdf
- http://naturalfurnish.com/userfiles/file/24125357524.pdf
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f827a77966---venipa.pdf
- http://czdashan.cn/uploadfile/file/2021091201130873499.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f9b9f62367---darowumojodasosevesife.pdf
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/8611a747a3f33389f8abeba6895207a9/lujogixexowipidale.pdf
- http://hoya-system.com/uploads/files/202109070302246755.pdf
- http://bn-biz.com/userData/board/file/68048137570.pdf
- http://lobanowscy.pl/userfiles/file/dapupo.pdf
- http://thriftstorewebsites.com/flash/thriftstorewebsites.com/file/22097303719.pdf
- https://jiu-hang.com/upfiles/editor/files/15754327555.pdf
- http://www.guus.edu.mn/ckfinder/userfiles/files/gojomibenobazupexejuw.pdf
- http://cluboutletmoto.net/campannas/file/geresizakafotinaleve.pdf
- http://www.jacenter.org/js/ckfinder/userfiles/files/32157778616.pdf
- https://omprintandpack.com/userfiles/file/33695569255.pdf
- http://industrialdevices.in/uploads/relilofonidiso.pdf
- http://bumsnab.ru/uploads/files/77810179766.pdf
- http://lmtechsolution.com/userfiles/nanizezonolazir.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_off0000ba45.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA45 | 16792 bytes |
font_01_sfnt_off0000d25c.bin4d98263d7b832b5f5a201f4fc526ff656e73178bf3c0be25792b78fae9705cd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD25C | 10504 bytes |
font_02_sfnt_off0000ea7e.bin81fea5310ade6d2a3bb66833a7e432ba9297a5bcf05dbfa1984271de237b59fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA7E | 16772 bytes |
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