MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, many hosted on compromised WordPress sites, directing users to download files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely a phishing or malware distribution scheme. The presence of external URIs and link farms suggests an attempt to redirect users to malicious content or downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://krisoc.ru/uplcv?utm_term=free+download+videoder+apk PDF link annotation
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/161326f7455c16---73823838632.pdfIn PDF document text
- http://esteel.my/userfiles/file/81264596252.pdfIn PDF document text
- https://hongming-eco.com/userfiles/file/69196562171.pdfIn PDF document text
- http://luijkzonwering.nl/image/file/29931696602.pdfIn PDF document text
- https://vadihosting.com/calisma2/files/uploads/29059844334.pdfIn PDF document text
- http://alompar.hu/uploads/content_files/files/murogekovovulosonole.pdfIn PDF document text
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e04adc13a9---42272641061.pdfIn PDF document text
- https://intrastorg.com/userfiles/file/kufupuxolexevojuxakujuj.pdfIn PDF document text
- http://baikalspring.ru/ckfinder/userfiles/files/59050482830.pdfIn PDF document text
- https://aluminiosarla.com/userfiles_arla/files/jogutu.pdfIn PDF document text
- http://yoshitomo-kokubunji.com/jcfiles/file/71783214367.pdfIn PDF document text
- http://siamsankyo.com/Uploads/file/lipiwaseko.pdfIn PDF document text
- http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/tuledovetapugixa.pdfIn PDF document text
- https://jagamimpi.com/contents/files/46828690355.pdfIn PDF document text
- https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1614d85c654d6f---99441629713.pdfIn PDF document text
- https://eetravel.net/file/nefagitujatomozatibokusod.pdfIn PDF document text
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/v610fc12jorqdouq9fji6g035j/10769805936.pdfIn PDF document text
- http://spbmedaks.ru/sites/default/files/uploads/13428923283.pdfIn PDF document text
- http://naasschoolofmotoring.com/fckeditor/userfiles/file/tubanosekisigilejasawi.pdfIn PDF document text
- http://mail-business.ru/uploads/file/bajuvasafitofuxexudire.pdfIn PDF document text
- https://www.winsum.frl/ckfinder/userfiles/files/27272919691.pdfIn PDF document text
- https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/8og909asb50i3l3tjdu6hhnmk3/rorefezawukes.pdfIn PDF document text
- https://questfran.com/broker-site/files/files/51595771534.pdfIn PDF document text
- 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_off0000b233.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB233 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA45 | 14784 bytes |
SHA-256: f54b1bcb30feed5941b7ccf80c687034a707cfd26a34d24807613a012f50f1f2 |
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font_02_sfnt_off0000ef3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF3F | 10340 bytes |
SHA-256: aabdb0cc815b6da81ecfd20b476ec5d9ecdf71797b634692615d6fd4d3d717dd |
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