MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download button' lure and callback phishing indicators further supports a malicious intent to trick the user into downloading a payload or engaging with a scam.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 8
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://inwebjor.ru/uplcv?utm_term=best+ios+launcher+for+android+2021
- https://hitourkorea.com/FileData/ckfinder/files/20210912_4860668BB96FB2CF.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613896489c3e0---52093207799.pdf
- https://zagorjeadventureteam.hr/files/senetefonubogedaxojimidu.pdf
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144aa99bfd55---joxivabaduj.pdf
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/9a494a1c6d7d02f86a9de247dac137bd/xibetexelepasoxulilo.pdf
- https://vjlabor.pitscovn.com/uploads/Upload/files/3633356434.pdf
- http://veterina-hrib.cz/user-uploads/files/51298122577.pdf
- https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/161366287ad76b---digibebenabimada.pdf
- http://andreuma.madteam.net/ckfinder/userfiles/files/kaladiximu.pdf
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b613dccc07---76210703372.pdf
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfea858727---fazobusiluvu.pdf
- http://studionegrelli.it/userfiles/files/42945345198.pdf
- https://b7b.reviewz.eu/app/webroot/files/userfiles/files/bogumutomuwawunupov.pdf
- https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/161336cc91f2f4---86527941863.pdf
- http://avandcie-automation.com/ckfinder/userfiles/files/lerovinixogedew.pdf
- http://otohyundaidanang.com/uploads/image/files/luwoxebuleruzepizeravugop.pdf
- https://egokituz.org/files/galeria/files/23515068226.pdf
- http://bursaceyizgelinlik.com/images_upload/files/86092120485.pdf
- http://ssaisarang.com/ckfinder/userfiles/files/fifanovidiwepeduseledul.pdf
- http://bettynblue.com/upload/fck_img/20210914/file/lizuwizovilibipepe.pdf
- https://predial-rua-nova.pt/056-CovadaLua/images-editor/file/32105017217.pdf
- http://boston.pl/fck_pliki/file/90566754042.pdf
- http://ucinnovation.ru/admin/ckfinder/userfiles/files/26709237458.pdf
- http://vnationwide.com/userfiles/files/45862496618.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_off0000d94b.bin2aac649723f40e693830d16d9b5f6fbb0058a5bdc575880a26ea7962f95e4c15 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD94B | 11020 bytes |
font_01_sfnt_off0000f2f5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2F5 | 16792 bytes |
font_02_sfnt_off00010b07.bind8bb0a21b48f4a9b4647005c4c7ecff16f96528c271006be45230ef307d13309 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B07 | 17608 bytes |
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