MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The document contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content. The heuristic 'SE_INVOICE_LURE' indicates the document's content is designed to deceive the user into clicking these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://medvor.ru/uplcv?utm_term=types+of+breach+of+contract
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a3b4abb22---bapofilapojakopezodab.pdf
- http://szyuangang.com/UserFiles/file///modudalu.pdf
- https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607496aca6fad---xaxipogedaxajasuxikexafi.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160a955d154b0f---18359967305.pdf
- https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/u2opoh1gs94o7j59cnn2mcsd5g/mexijopizijewitakurugaj.pdf
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093a497a6f2b---dimavisiseru.pdf
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/b2a38d425959d6a76224c8e4fcd77cfa/xoxugo.pdf
- http://amdind.com/userfiles/file/lasosepopudibugalitalev.pdf
- https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090f52a33998---58598790033.pdf
- https://anthonygillant.com/userfiles/file/woguj.pdf
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/e0n01djf84175192u1p2din50i/8034425869.pdf
- https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/0858b161eeb2e763b86e068decc2abff/92309908188.pdf
- http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbbf818603---72512797501.pdf
- https://buka.ru/sadm_files/tatuzevuzonitezomodeden.pdf
- http://sbsinternationalschool.org/sbsisnew/userfiles/file/xerumoke.pdf
- http://curry-box-deluxe.de/userfiles/file/vivexunazazurogale.pdf
- http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c15a1dc4d3---62001382099.pdf
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cea8e0716c---kazumafara.pdf
- http://gemculture.com/userfiles/file/24346652892.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/2icjgnl81r114k8jc66kfhphb0/51926498478.pdf
- http://testplanet.nl/uploads/files/81831881483.pdf
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/6cf933e926431126cb034302690b49dc/28138967929.pdf
- http://xn--b1agjlwjc3g.xn--p1ai/ckfinder/userfiles/files/70123242318.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ef49.bin477f287fe2d73cb924ec66567e59f691cb23846a1d890997ef0f349043e15fb1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF49 | 10656 bytes |
font_01_sfnt_off00010782.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10782 | 16792 bytes |
font_02_sfnt_off00011f94.binb2149af2c2b37a98619d79bd55c880503221b37b3f1e7d9f03a9ef425b8170b9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F94 | 17260 bytes |
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