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 websites, some of which are hosted on compromised CMS uploads or disposable domains. The presence of numerous unknown URLs suggests a distribution or phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 http://lindseyderence.com/userfiles/files/zoxaminonafuroguwomaz.pdf In PDF document text
- http://nhasachthunam.com/upload/files/90412357624.pdfIn PDF document text
- http://xn--aknmedcal-wpbe.com/uploads/file/weleluvimuw.pdfIn PDF document text
- https://www.paseppe.gr/ckfinder/userfiles/files/16449368466.pdfIn PDF document text
- https://firsatoyun.com/calisma2/files/uploads/57791979540.pdfIn PDF document text
- https://aristi-trap.com/upload/users/files/89066066155.pdfIn PDF document text
- http://saga.diamonds/uploads/ckfinder/files/zezibova.pdfIn PDF document text
- http://naphogacomposite.com/upload/files/kejutexizo.pdfIn PDF document text
- https://hsiaoying.com/userfiles/file/dunijuziki.pdfIn PDF document text
- http://back2wood.de/userfiles/file/99950599420.pdfIn PDF document text
- http://potya.com/pevelikabogesumip.pdfIn PDF document text
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161385a0a7f1fd---12408369469.pdfIn PDF document text
- https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/10041d088ee386966a04244b3e133b73/wunuzosibaminudiminapulop.pdfIn PDF document text
- http://rqconsultores.com/userfiles/file/refusuxebimunufojeda.pdfIn PDF document text
- http://bualuang101.com/backoffice/upload/files/vusuno.pdfIn PDF document text
- http://bsa-billiard.by/images_from_html_editor/file/mokeleforigutabuze.pdfIn PDF document text
- http://americasbestmanassas.com/uploads/files/3534359550.pdfIn PDF document text
- https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/oe2ua7qifug0sknh39pg2kr37l/vubesusoxiwikoj.pdfIn PDF document text
- https://majubesar.org/contents/files/8738268951.pdfIn PDF document text
- http://www.somdattabasu.com/fckimages/file/suxavim.pdfIn PDF document text
- http://www.hussco-steel.com/husscofiles/files/43804006903.pdfIn PDF document text
- http://allcreaturesinc.com/files/files/49255837923.pdfIn PDF document text
- http://www.almansori-ye.com/almansorifiles/files/ladamezafu.pdfIn PDF document text
- http://sevenseahotel.com/uploads/images/files/vofefinidadevibikuguzem.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=download+tango+livePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b4f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4F7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cd09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD09 | 14828 bytes |
SHA-256: 636841b7fbbe642b7b424700e6e20e614bebb05ebcb1a365734184893676b188 |
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font_02_sfnt_off0000f22b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF22B | 10308 bytes |
SHA-256: 21082eaca8e84156fae4b226b9dac8133a04c01990387697f980b1c16553af3e |
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