MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is unreadable, but the presence of these links strongly indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
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://drafthe.ru/uplcv?utm_term=lista+de+exerc%C3%ADcios+opera%C3%A7%C3%B5es+com+n%C3%BAmeros+decimais+6o+ano+doc PDF link annotation
- https://bulendengin.com/upload/ckfinder/files/tegogeve.pdfIn PDF document text
- http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/72223414123.pdfIn PDF document text
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075f58dbfbe6---kejarotamubijuxopiwotupuv.pdfIn PDF document text
- http://npi-management.com/ressource/site-image/files/26764451901.pdfIn PDF document text
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/s72ieujshd8i9lb3hk32p7df00/fojudabimujujilopip.pdfIn PDF document text
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/47acc0cc89e0b4a9ba5299c275be4e9f/jilivobipadofikowux.pdfIn PDF document text
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160748046e174d---61101569673.pdfIn PDF document text
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/k2q30lcc4j4ktek5kr6e4e13ao/90754421205.pdfIn PDF document text
- https://free-spirit-city.eu/uploads/wysiwyg/files/widugavanaxit.pdfIn PDF document text
- http://gd-weimi.com/upfolder/e/files/20210701205617.pdfIn PDF document text
- https://wodgluch-projekt.pl/userfiles/razowan.pdfIn PDF document text
- http://koreabulk.net/userData/board/file/lonasabazini.pdfIn PDF document text
- http://sterenstein.ru/userfiles/file/35256515119.pdfIn PDF document text
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/ae0c2e4c809a87c312ef3f39080d8b5e/62460963632.pdfIn PDF document text
- https://accuratesearch.com/userfiles/file/5310165489.pdfIn PDF document text
- https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/a9ee93e1b9dc2e9c849a34dd9810f332/kobiso.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e87e917cd---vaguf.pdfIn PDF document text
- http://tlproduct.com/userfiles/file/57413837632.pdfIn PDF document text
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a0fff1e620ed74eebdb854b8966f372a/xexijakibuxagekotesozut.pdfIn PDF document text
- http://gestaocipa.com/public_html/Imagens/file/61137858622.pdfIn PDF document text
- http://www.petersonassoc.com/emailimages/file/57004015430.pdfIn PDF document text
- http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202106030911337325.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e1101014e38---58526598008.pdfIn PDF document text
- https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/44790e4963ac44a8f03323f50583972f/35589583247.pdfIn PDF document text
- 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_off0000cf12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF12 | 18720 bytes |
SHA-256: e23ebc1d82f22a92e3ff68bf05a2cd414ecb730aba13a14f642fb9763791d708 |
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font_01_sfnt_off0000fd36.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD36 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001154d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1154D | 11456 bytes |
SHA-256: 445ed2bda2c4e0a147b79a3531460b919ca1bb066f37f6475c8646565ff8b922 |
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