MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to distribute malicious content. The embedded JavaScript likely facilitates the redirection to these external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.5316
Heuristics 7
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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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://newsale.linyn.mobi/upload/ckeditor/pages/files/38451953557.pdf In PDF document text
- http://falconfam.com/ckfinder/userfiles/files/77686889547.pdfIn PDF document text
- http://w-w.cn/isee/pfm/cms/uploadfile/fck/file/8717598836.pdfIn PDF document text
- http://avs-market.ru/admin/ckfinder/userfiles/files/6872412547.pdfIn PDF document text
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132d7a79d659---96282241761.pdfIn PDF document text
- http://grandioso.asia/editor_upload_image/file/39151718406.pdfIn PDF document text
- http://dietgame.net/admin/fckeditor/data/file/20210911073018.pdfIn PDF document text
- http://baovekhucongnghiep.com/upload/files/78182983319.pdfIn PDF document text
- http://klick-tipp.at/ckfinder/userfiles/publics/files/kemixususotamuj.pdfIn PDF document text
- http://ingegnasrl.com/userfiles/files/sanedawedurivagajafalo.pdfIn PDF document text
- https://jhservice.net/imagenes/galeria/files/86149838868.pdfIn PDF document text
- http://zonwering-nederland.eu/ckfinder/userfiles/files/debanasisokeb.pdfIn PDF document text
- http://eortak.com/img/fck_temp/file/fotora.pdfIn PDF document text
- https://zakarpattya-tour.com/upload/9015547588.pdfIn PDF document text
- https://volpatoebrum.com.br/_common/admin/scripts/ckfinder/userfiles/files/tupejo.pdfIn PDF document text
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613bad6196937---figuvalixipiwabuke.pdfIn PDF document text
- http://techscreening.com/userfiles/files/87622050620.pdfIn PDF document text
- https://officialbacknumber.com/editor_up/fifevujigu.pdfIn PDF document text
- http://cn-polylysine.com/d/files/53270823404.pdfIn PDF document text
- http://peterpan1996.it/userfiles/files/14109668269.pdfIn PDF document text
- http://www.physedu.in/newsite/userfiles/files/dagazikukelozopuluj.pdfIn PDF document text
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f724a86641---wedejejiruzozobovomib.pdfIn PDF document text
- http://ustunongel.com/image/files/79813642778.pdfIn PDF document text
- http://phunggia.biz/userfiles/file/60192204174.pdfIn PDF document text
- https://projektovanje.info/userfiles/file/25776147963.pdfIn PDF document text
- https://wecareu.net/ckfinder/userfiles/files/41932461589.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=packing+gel+styles+for+oval+facePDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eaf5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAF5 | 10784 bytes |
SHA-256: 357b2f4d8d2e787fff4399cc01bf218df41f8224a0cda3f9c994247f10214114 |
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font_01_sfnt_off00010407.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10407 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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