MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF file flagged by ClamAV as a phishing trojan and a machine learning classifier. It contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download button' heuristic further supports the phishing lure attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://synerhu.ru/uplcv?utm_term=browser+unblock+apk
- http://zsdbiopharm.com/upload/files/netedifenekuli.pdf
- https://simon-daulte.com/ckfinder/userfiles/files/31237791627.pdf
- http://kanchanaspa.com/ckfinder/userfiles/files/15760953391.pdf
- http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/43637154316.pdf
- http://ty6600.com/userfiles/file/fajujizelupoduxu.pdf
- http://trunglam.vn/uploads/userfiles/file/5978635182.pdf
- http://forumcutuca.com/ckfinder/userfiles/files/tudizov.pdf
- https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/161348639b669e---josarexasegibiwanosu.pdf
- https://reclamesticker.nl/images/uploads/file/
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/t3e7edqp6en94lqsa5f1apl284/lepexagoba.pdf
- http://textstricker.de/benutzerdateien/62554258043.pdf
- http://pyhunlian.com/uploadfile/file/24567594589.pdf
- https://ferado.vn/userfiles/file/kadarenamasupokukupew.pdf
- http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/36194379975.pdf
- https://bwhe.in/ckfinder/userfiles/files/mapikaxogemeje.pdf
- https://vr-spagna-20.effievirtual.com/galeria/files/89450523993.pdf
- http://ahzgbh.news-read.com/upload/files/kuxax.pdf
- http://3mfa.com/images/editor/files/rudiwamekokur.pdf
- http://turinhotelcompany.com/userfiles/files/70960124176.pdf
- https://thietbivesinhsonhoa.com/webroot/img/files/40041889434.pdf
- https://office-agglo-larochelle.fr/userfiles/file/13437605352.pdf
- https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/0cd5a08f476ecee66bbfb9faffa1fe6b/91763007564.pdf
- https://milosislandrooms.gr/userfiles/file/24478437161.pdf
- https://printsolutions.printsolutions.bg/uploads/wysiwyg/files/54697897798.pdf
- 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_off0000d1d6.bin209f025516cf94b385fcfeec5c08b5212e158bf9d2778b53e877f9c4c109c87b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1D6 | 18296 bytes |
font_01_sfnt_off0001013b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1013B | 16792 bytes |
font_02_sfnt_off00011952.bin4b2448cc1b9639ef48ddfab44c2808c00b9faf73dd34bcb07be82f8ad9cb6092 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11952 | 10648 bytes |
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