MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm hosted on multiple domains, many of which appear to be compromised WordPress sites or disposable hosting. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to download an archive and provides a password, a common tactic to evade gateway scanning. The ML classifier and ClamAV detection strongly suggest malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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 http://kfgame.snailgame.ru/upload/files/20210903003321.pdf
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161302ef8374bf---94775861730.pdf
- https://mfdesign.hu/files/file/66701951171.pdf
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/28c03778b8fe5089bc5e2d4267d0818e/50598783011.pdf
- http://cameranichietsu.com/luutru/files/53078141193.pdf
- https://siemreaptraveltours.com/userfiles/file/punofiwidaf.pdf
- https://htlexpress.com/ckfinder/userfiles/files/vupebi.pdf
- https://www.lipca.com/ckfinder/userfiles/files/sujonada.pdf
- http://colorfusion.us/admin/images/file/75687589907.pdf
- http://lienming-rubber.com/uploads/files/202109082051104269.pdf
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613676e60b785---13619978046.pdf
- http://expertworker.paraleumarian.ro/app/webroot/files/userfiles/files/80030436511.pdf
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/14dbcff5cef37143d06dbf5c64e8c41f/81362196878.pdf
- https://www.thic.net/plugin/ce1/ckfinder/userfiles/files/zevagoretofopobiralo.pdf
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/161441ef0131bb---mojudebosokalepaledotuvif.pdf
- https://armenia4d.com/contents/files/mukagus.pdf
- http://prosquash.by/data/69938762086.pdf
- http://fcgo.tw/uploadpic/files/44492066197.pdf
- http://naoshima-tours.com/images/blog/file/rivopobomutebu.pdf
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614159d618329---zelujozirudonuvobivo.pdf
- http://atsolution.org/userfiles/file/20210912052339163391112.pdf
- https://arhstroi.by/uploads/files/filapojeg.pdf
- https://mygoaltv.com/ipp/images/uploads/files/sibijo.pdf
- https://univerosg.com/ckfinder/userfiles/files/6060731498.pdf
- http://cokhitienvuong.com/uploads/files/fonavorusas.pdf
- http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161414075acebb---gegabaxatol.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+unlock+my+phone+from+metropcs
- 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_off0000db10.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB10 | 16792 bytes |
font_01_sfnt_off0000f322.bin7e9c1e297a4d475c575f54b6fce7dff4cda91d5798751bf18d1ad5f10836a75e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF322 | 18344 bytes |
font_02_sfnt_off000122eb.bine521a1a9aca5744460a963b78e02a29a65e3af6b976dc44ec8e2579ed2d3154c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122EB | 10872 bytes |
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