MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file is identified as a malicious PDF by multiple heuristics and an ML classifier. It contains a link farm pointing to compromised WordPress sites, suggesting an attempt to lure users to malicious content. The presence of embedded URLs and the nature of the link farm indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/079db8d88d283a5bc5bdb7ade2dcc613/649133997.pdf
- http://cdhsalumni.com/clients/28864/File/74328417095.pdf
- http://henghuitong.com/jingkelun/userfiles/files/20210615000045.pdf
- http://gatewayhotelbangkok.com/upfile_hotel/files/topizavekogobexu.pdf
- http://cba60.com/clients/6/6c/6c2dd71b6188bc8e8f5adc6209c6f86c/File/21436799856.pdf
- http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/tqvlljd12qphu59n86mdqcoi25/57273560381.pdf
- http://pvvc.cz/files/monadisagaje.pdf
- https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/62579b69ae0a11b009b50f933d636713/vubapojirovetelanibif.pdf
- http://vodnik48.ru/content/file/11559992753.pdf
- https://easypayindia.in/userfiles/file/27975265905.pdf
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f3565df7d---57112818631.pdf
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/d41f84242c09246f2f4d75320e2e9532/sarixem.pdf
- http://pitchdecor-construction.com/user_img/files/60222626803.pdf
- http://mcutech.net/files/10299664693.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/uik1l12kmhnq5889a5jqjvpoto/8813735632.pdf
- http://tfh-filter.hu/_user/file/8394509234.pdf
- http://diagnosticaedilizia.com/userfiles/files/gejekugexine.pdf
- http://print-resource.co.uk/ckfinder/userfiles/files/xoriduwepafubibo.pdf
- http://launensia.cz/ckfinder/userfiles/files/77959058510.pdf
- https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b76fe524db6---gonexisusop.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609476a6b7d8a---66169099463.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/691d26813c59cfff2ee41da80dd7c291/98089390521.pdf
- https://aawyx.com/sites/default/imageuser/file/98347865847.pdf
- http://school19-zav.ru/userfiles/file/48684440847.pdf
- https://idd.no/ckfinder/userfiles/files/supekamese.pdf
- http://systemsbiology.at/uploads/assets/file/vewupase.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=budget+in+excel
- 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_off0000c29e.bin0bfee695ff449db1a4feb2234844532b2e62c9f3a3609a62f3312653a0203e27 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC29E | 10248 bytes |
font_01_sfnt_off0000d98e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD98E | 16792 bytes |
font_02_sfnt_off0000f1a0.binc46aa8297b8c84a1c13bde233ab22c9bd02b44a180ee43538b4b136804179300 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1A0 | 16100 bytes |
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