MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by ML and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs pointing to compromised CMS uploads and disposable hosting, forming a link farm. The presence of external URIs and the nature of the link farm suggest a phishing or redirection scheme to deliver further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://tuivaivietnam.com/uploads/files/38117144718.pdf In PDF document text
- http://stattus.com/assets/file/35711723936.pdfIn PDF document text
- http://afghansolar.com/userfiles/file/zenuzonomuvojokuguges.pdfIn PDF document text
- http://importfoodfair.com/userfiles/image/2021/09/file/rukikukapagoxugodarojuzul.pdfIn PDF document text
- http://corse.annuaire-regional.com/ckfinder/userfiles/files/xexijimoxogukud.pdfIn PDF document text
- https://edu-mate.kr/_UploadFile/Images/file/tonadomerof.pdfIn PDF document text
- http://www.ks-klinika.ru/ckfinder/userfiles/files/rodonalepadujapawugusap.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c1e2d732c5---35646238778.pdfIn PDF document text
- http://darangyi.com/userData/board/file/sesedixis.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ef524cbb1e---40669453061.pdfIn PDF document text
- http://cariboohose.com/userfiles/file/96563335237.pdfIn PDF document text
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613c59ac5fbad---83002422059.pdfIn PDF document text
- https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/41311556130.pdfIn PDF document text
- http://windmill-bv.com/userfiles/files/gopodinijulosaf.pdfIn PDF document text
- http://beijingxinzhi.com/userfiles/file/20210913224751_560473275.pdfIn PDF document text
- http://goldnumber.info/userfiles/file/nowakad.pdfIn PDF document text
- http://zxsolar.com/d/files/kuxutexobepuv.pdfIn PDF document text
- http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nurojoxisuvoremupilira.pdfIn PDF document text
- http://wsm.hk/images/files/57898413540.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=how+do+i+transfer+my+whatsapp+messages+from+android+to+iphonePDF 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_off0000abd8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xABD8 | 16876 bytes |
SHA-256: e353adcd561131ba9ec169ed2cfc1c007094fb31cb30b2bc6a7bbfb6e8956027 |
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font_01_sfnt_off0000d723.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD723 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ef3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF3A | 11088 bytes |
SHA-256: dc64de15e5b0f0219428351a466adab10af54e6cfe027a182de3116fa77eb99f |
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