MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document identified as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a network of links for SEO manipulation or to host malicious files.
Machine Learning
- Nyx PDF Classifier malicious score 0.9887
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://coretry.ru/uplcv?utm_term=proteus+light+and+sound+machine+manual
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/7p9ljhgupqpt2bp93n4id73r86/natel.pdf
- http://nguyenquangcomputer.com/upload/ck/files/bomiw.pdf
- http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/tijawujibukanoke.pdf
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609482dbaa708---mojibebudotikuge.pdf
- https://securitegenerale.tn/userfiles/file/gonutovomodebafe.pdf
- https://akamercedes.com/images/uploads/files/8221789895.pdf
- http://aarogyamedico.com/userfiles/file/2543356974.pdf
- http://quickvideo.nl/userfiles/file/pepotarorufatorot.pdf
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/lt8ndfg5ev1rmhn47h5bfbn7d3/befutowuwojizozavepiguru.pdf
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160759c80d735d---xudofafawi.pdf
- https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/d3cbc3712d149f6b96443db0c0822be0/53405234710.pdf
- https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/86b6e0ee8f1b19faa79352d417faee8f/fovebewa.pdf
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/l6iintah8ko42tpjr0hqu8nsqe/gawuso.pdf
- http://bogelaipigeon.com/upload/file/pejewale.pdf
- http://loveforlungs.com/clients/a/a9/a9a80f3a93b7553e0860ec1960497db0/File/24000575468.pdf
- http://buergerforum-tirol.at/file/dopame.pdf
- http://biometria.pl/photos_fck/file/6711589337.pdf
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/iclvhbd0shb86a99amkndk22r3/40299528288.pdf
- http://vladjurnalist.ru/archive/file/69279958576.pdf
- http://titusrelay.com/clients/e/ef/ef304ccc03541e9e6382bef5f13b0a7d/File/nafodedab.pdf
- https://petikdaun.com/contents//files/21802807550.pdf
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094b25af146c---27036738742.pdf
- https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757629c6e41---21923878899.pdf
- http://caffepontoni.com/uploads/file/31620771928.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00014cd5.binc598078a62b5044b124f0018936a3ab3ffd02dc3262c27569d321547c35386fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14CD5 | 18380 bytes |
font_01_sfnt_off00017d37.bin0491ab1f9781984131449868ed95f15036bddabad70a51597ae233fa8bdf08d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17D37 | 16076 bytes |
font_02_sfnt_off0001925e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1925E | 16792 bytes |
font_03_sfnt_off0001aa75.binc2862425bf08685e826da0029ed76955896427ff8d7024aaa399a7a125c19c0f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1AA75 | 10920 bytes |
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