MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The PDF file was flagged by ClamAV as a phishing trojan and an ML classifier indicated a high probability of maliciousness. It contains a link farm pointing to multiple compromised WordPress sites and other disposable hosting, suggesting an attempt to distribute further malicious content or phish users. The presence of numerous external URIs and a link farm structure strongly indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9860
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://happyfun.tw/uploads/files/202109012117559446.pdf In PDF document text
- https://farmaciasacoor.com/site/upload/file/venifixubulepawituzadawu.pdfIn PDF document text
- https://doctornhospital.com/banglanews24/editorsfiles/files/lozinexapuxuluvep.pdfIn PDF document text
- http://lnianemarzenie.pl/userfiles/file/sapisalekimagakevu.pdfIn PDF document text
- http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/e0dc625826eebd068ab42783c83a7f1b/8818248870.pdfIn PDF document text
- https://jpjplumbingandheating.com/FCKeditor/file/63292408292.pdfIn PDF document text
- http://word.mn/uploads/assets/narosiga.pdfIn PDF document text
- http://ntep2008.com/UserFiles/File/befewaxobebon.pdfIn PDF document text
- http://meimagedance.tw/ufiles/files/robikomexe.pdfIn PDF document text
- https://rts-wm.com/ckfinder/userfiles/files/50732631896.pdfIn PDF document text
- http://087334211.kad.tw/kads/ckfinder/userfiles/files/figaxudusugup.pdfIn PDF document text
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161316a084e1bf---27699316776.pdfIn PDF document text
- http://dynamic1984.com/user_file/file/fitebus.pdfIn PDF document text
- https://hobbypet.cz/files/file/megulusaduwinexakopufudes.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d7bb07dd09---49512387933.pdfIn PDF document text
- https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138911d067ec---voral.pdfIn PDF document text
- https://weborder.cloud/userfiles/file///nemijaxidosizidadopaliz.pdfIn PDF document text
- http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1613ec71354fbf---33022024949.pdfIn PDF document text
- http://0575zl.com/userfiles/file/bavufotagawozopixuf.pdfIn PDF document text
- https://smg.bid/ckfinder_userfiles/files/80561104759.pdfIn PDF document text
- http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae46743dcd---dunusas.pdfIn PDF document text
- https://prawobrzeze.info/userfiles/file/80447496933.pdfIn PDF document text
- http://massarentearchitettura.com/userfiles/files/11377892832.pdfIn PDF document text
- http://kronikarp.pl/ckfinder/userfiles/files/fogosadanikigakobubu.pdfIn PDF document text
- https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/1f7deab4f1020d83426d8a1335a150a6/95057132160.pdfIn PDF document text
- http://chixue.com/uploadfile/file/20210913085409.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=mx+player+mod+apkPDF 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_off0000e4c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4C4 | 18220 bytes |
SHA-256: b831a29a400f246cbd16fed6b746a190bb6c8d79f354a3f6393bf7045affecdf |
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font_01_sfnt_off00011465.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11465 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012c7c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C7C | 10392 bytes |
SHA-256: ea96d6eb0b6570bc3df2e40f506ea7c0ed7989c5cc05a6cb5999446d7dea1507 |
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