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 as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress upload locations and disposable hosting sites. The embedded URLs, such as 'https://irlanc.ru/uplcv?utm_term=lyrics+dont+fence+me+in', likely serve as lures for further malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://irlanc.ru/uplcv?utm_term=lyrics+dont+fence+me+in
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085201dc4197---mulofupezikopejurotelepud.pdf
- https://ozmutludokum.com/userfiles/file/vuxadab.pdf
- https://brianhigbielaw.com/UserFiles/file/42839037642.pdf
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e9a6c5c8f---rofatufagibulidinu.pdf
- https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/g8eve95f986er991o61bj1lpt5/gafefun.pdf
- http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088c379cc477---nebum.pdf
- http://pokewaveanaheim.com/uploads/files/nufamuginivivirilul.pdf
- http://samurairamenbar.com/uploads/files/wenokimoxuwu.pdf
- http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16087ef9a84703---67913437926.pdf
- http://allg-gyn.ch/userfiles/file/78962534235.pdf
- http://monroehighbeachreunion.com/clients/8/88/88bd109b8fc96949fe6caf7698e88fda/File/15158029613.pdf
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcf2d08926---velobusavexazinokuriwas.pdf
- https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/f7ec720b1ef13d88e4cf9187f756fa05/5440114454.pdf
- https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/a4553690503bebb1c66af6e3490debc5/lepavupifa.pdf
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/895ed89c9106fd582545c673c33e99ac/8370889504.pdf
- https://ipic.vn/userfiles/file/lokekodagamusekijujager.pdf
- https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/mdi2b26ls89j2ijupq3hprhcq6/56273389582.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16075eb003c6b8---97475489812.pdf
- https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/a298b46254fdc9e77f430440619d8a16/dijipunilakogelisok.pdf
- https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/7catadr868fqd7mgq7j9jlfp2o/58892613828.pdf
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5b92d0465---21776172229.pdf
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd692082762---31731371132.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_off0000bb9c.bin466f8e225035273de2b95001c3aa49b8e3b91a86bb5f5fb7e4d17bb09557577d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB9C | 10500 bytes |
font_01_sfnt_off0000d37e.binb99e7b6684b09bffa7eeacc70fc77419957263c35caad834643c26560d71f7d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD37E | 15420 bytes |
font_02_sfnt_off0000fb66.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB66 | 16792 bytes |
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