MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. Heuristics indicate it functions as a link farm, distributing links across numerous distinct hosts, many of which are compromised WordPress sites. The embedded URLs point to PDF files hosted on these compromised sites, suggesting a multi-stage attack designed to lead users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/851eh6noouvhdf8rj09oko7s61/gupinazuguxopopa.pdf
- http://ats-dz.com/userfiles/file/bekiz.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4cbdd8735---zafobedakutogunekemo.pdf
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ede07663a60---43509309702.pdf
- http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f47352e6c---xivexa.pdf
- https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/d3r2qliq9rs1a11moapkbmrg51/teniz.pdf
- https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/15f199ea82ef7ce2c74dac0b0d42e53f/80851640550.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/td39nmt36gsv24b4vnkfra1ulu/2623576914.pdf
- https://codecs.roimages/file/57115599806.pdf
- http://orchid-daikanyama.com/userfiles/file/6498256463.pdf
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/52b21c0079f8edda7a8ba3fc7154b052/xelesi.pdf
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/v9fpompq5nur7i1fj43jk2ds36/vazawenozewunasuxu.pdf
- http://cnzhongkui.com/fckeditor/editor/filemanager/connectors/php/uploads/file/312227083757.pdf
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e6006b79eefe6dad5173fd240670fcd4/93217663289.pdf
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c39000ec76b---rivutake.pdf
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/1f8112bf7a23c3342fca3a1e9289cf6b/wofujajuxazewuvolo.pdf
- http://poexali.org/static/image/_u/system/files/35812403911.pdf
- https://arredamentigiacobbe.it/file/bamiwegumuk.pdf
- https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/pktaujaddrdfc99kfe4k3r8fkr/99180465578.pdf
- http://wghsclassof69reunion.com/clients/b/b3/b33699c65747f61a54cd06c2fab73d22/File/devobidivon.pdf
- http://turatabor.hu/media/zegoloval.pdf
- https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084bfaf1e3f0---kegudanu.pdf
- https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/1dcbeed77189742ec6cc14776a738fcc/90035970307.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160bb2d3d07129---solurawibo.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=shortcut+key+to+select+a+word
- 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_off0000f5ed.bin6b3d709a80df4ef06dafe819ed4d51833d913f07b972604f811c00ec0b1a50d6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5ED | 17464 bytes |
font_01_sfnt_off00012376.bin40041994f221e8c7841cda5e33394f7ef2700086f9171abf2e57df4a0049fc43 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12376 | 10736 bytes |
font_02_sfnt_off00013c6e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C6E | 16792 bytes |
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