MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file 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 external URLs hosted on potentially compromised or disposable domains. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous links to PDF files on various domains strongly suggests 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-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 http://pphu-joanna.pl/fckpliki/file/kavubosavanadawa.pdf In PDF document text
- http://mywayrtk.info/userfiles/file/44122910772.pdfIn PDF document text
- https://herfection.herfection.tw/upload/ckfinder_temp/files/20210825054314.pdfIn PDF document text
- http://beverleyannes.net/home/beverley/public_html/ckfinder/userfiles/files/96329706578.pdfIn PDF document text
- http://cutencuddlybreedables.com/_images/file/46997699656.pdfIn PDF document text
- http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1611f5dd331fcd---18412238745.pdfIn PDF document text
- http://5mal4.de/moneyvidya/web/images/userfiles/file/84030225463.pdfIn PDF document text
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a795b7249e8---mekidobazejewiwugoxefofow.pdfIn PDF document text
- http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/4fb37f5a1ad4cbcbd5a4530bf83a9249/befosovodedoki.pdfIn PDF document text
- http://timeyear-v.com/userfiles/file/88358732041.pdfIn PDF document text
- http://berallebags.com/UploadFiles/FCKeditor/20210729164207.pdfIn PDF document text
- http://permanentnimakeup-brno.cz/userfiles/files/81648125803.pdfIn PDF document text
- https://everestart.com/images/stories/file/4199254695.pdfIn PDF document text
- http://sarica.com.tr/ckfinder/userfiles/files/vudalabe.pdfIn PDF document text
- https://anmimar.com/royal/userfiles/file/denimusokuwilul.pdfIn PDF document text
- http://bukharajohnscreek.com/sites/default/files/file/83455484637.pdfIn PDF document text
- http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/48266389253.pdfIn PDF document text
- http://mwflower.com/upimagesfile///mojanib.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/qgv1ft841al72j4v3k9ftolgqj/92056803379.pdfIn PDF document text
- http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/22617666011.pdfIn PDF document text
- http://win-sonic.com/kida2018/ck_imgs/files/79504738702.pdfIn PDF document text
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/9gc9ih6d4mh8b9fpaafdn58gk7/66902989675.pdfIn PDF document text
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c71c18361d---kedukadagejakaji.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=how+many+gallons+is+106+quartsPDF 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_off0000dd9b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD9B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f5ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5AD | 16556 bytes |
SHA-256: e434ed7423b636f16a0a1ad2e85c1a786cde4f678e3c1b18a8ebfc0332945796 |
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font_02_sfnt_off000120ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120BA | 11100 bytes |
SHA-256: 018d904b850d63624d10e89192f12806670745a6b2e8c41b87d5d536cfd05875 |
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