MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It employs a social engineering tactic by presenting a lure to install a browser extension or update, a common method for credential theft or malware installation. The document also contains numerous links, many pointing to potentially compromised WordPress upload directories or disposable hosting, suggesting it functions as a link farm to distribute further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://hueide.com/upload/files/50632049692.pdf
- https://tylbm.com/Upload/ckeditor/files/70796357008.pdf
- https://rajakedua.com/contents/files/napole.pdf
- http://archidaldegan.eu/userfiles/files/81852959894.pdf
- http://alexandersorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dovabuworiwibejuse.pdf
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/80f065ef643a7af076f96a12dc6de184/46533422009.pdf
- http://sentai.cc/data/file/20210912_230411_479.pdf
- https://razredna-nastava.net/files/63262305677.pdf
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/pv3tgdu6tjp4gkbf3jl4643lp4/69206320411.pdf
- https://patidarpalanpur.com/web/k/main_admin/ckfinder/userfiles/files/22507226132.pdf
- http://share-world.tw/userfiles/file/lorutasakanetufi.pdf
- http://kdekdyjak.cz/data/xivodifovanep.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/41060d3be626fa261370c9fbc1c6183a/purojefitivuxajudated.pdf
- http://hak-al.com/resimler/files/demememo.pdf
- http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/roduxefilimevasogexeduz.pdf
- http://studiogallerani.it/userfiles/files/10425944460.pdf
- http://galluccifaibano.it/userfiles/file/78783816103.pdf
- http://gmart-express.com/demo/uploadpic/file/muwifobepeba.pdf
- https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/4c5dfca9b3bbbc5c6215b5bdec8ea38a/85595652933.pdf
- http://ajivikafinance.com/userfiles/file/gosadetovugosadisudoge.pdf
- http://homeopathyhongkong.cn/files/24421100556.pdf
- https://geneticapanama.com/userfiles/file/29967426372.pdf
- http://cybernet.asia/UserFiles/File/jiriju.pdf
- http://capital96.com/userfiles/file/70798153519.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=gravar+chamada+no+android
- 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_off0000da50.binfe62731cd679890bc7587932a9f8b34e36d4c431934200cea6da33dd1d6c2dc3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA50 | 19196 bytes |
font_01_sfnt_off00010990.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10990 | 16792 bytes |
font_02_sfnt_off000121a7.bin1502a4fbc7bfae92abfbeb7f5dad693c4ab43534afa22908ca603bfc8ad44e18 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121A7 | 10296 bytes |
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