MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a large number of external URIs, many of which are hosted on disposable domains or compromised CMS upload directories, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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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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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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://philabc.ru/uplcv?utm_term=element+with+smallest+atomic+radius PDF link annotation
- http://odnoklassniki-files.ru/images/uploads/files/tadazajunonavelaxof.pdfIn PDF document text
- https://iwanbim.com/userfiles/files/47315526983.pdfIn PDF document text
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/161460aa03b2ad---77988159571.pdfIn PDF document text
- https://ka-base.no/images_students/files/mekisavi.pdfIn PDF document text
- https://albizy.com/ckfinder/userfiles/files/66648979399.pdfIn PDF document text
- http://vietsinphar.com/uploads/files/1371893492.pdfIn PDF document text
- http://businessvaluationapp.com/fck_files/file/50533169916.pdfIn PDF document text
- http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/qshcthnqjilhfohufgk0bu5ji8/29700402406.pdfIn PDF document text
- http://tongchangkj.com/uploadfile/file///2021091101424891.pdfIn PDF document text
- https://spacio.hk/attachment/file/24148441060.pdfIn PDF document text
- http://kidneytracker.com/ckfinder/userfiles/files/zuvijugonirozuk.pdfIn PDF document text
- http://novichiha.ru/pic/file/36008736560.pdfIn PDF document text
- http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/6209006536.pdfIn PDF document text
- http://sieuthimaynhapkhau.com/upload/files/nivavisusadixisuxasemu.pdfIn PDF document text
- http://burningspearmarketplace.com/js/ckfinder/userfiles/files/94868709073.pdfIn PDF document text
- http://youil.org/userData/board/file/41107510515.pdfIn PDF document text
- http://lakshimi-kaatsu.com/user_data/packages/default/imgfiles/18945214738.pdfIn PDF document text
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329dc966462---11502748007.pdfIn PDF document text
- http://energosol.pl/images_cms/file/45224219435.pdfIn PDF document text
- http://0-50.ru/userfiles/file/58247068595.pdfIn PDF document text
- http://allgeology.ru/ckfinder/userfiles/files/gazozufe.pdfIn PDF document text
- https://posh.hr/files/tibujemelawax.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_off0000d2ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2EC | 10804 bytes |
SHA-256: 556fb587b841a842da19ce091c0cb2a8e3c5de6043289f27fe475ef1fe9897df |
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font_01_sfnt_off0000eba6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBA6 | 17456 bytes |
SHA-256: 4170e82485c6411510b5071d2900771a67943d24dd1a3e038428d2363f9c65f3 |
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font_02_sfnt_off000118b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118B0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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