MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics strongly suggest this PDF is used as a lure, likely for phishing or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 https://synerhu.ru/uplcv?utm_term=video+to+live+wallpaper+app
- http://mecateengenharia.com.br/ckfinder/userfiles/files/veribijadirif.pdf
- http://augustaelectricalwork.com/editorData/file/5786314729.pdf
- http://savitapiti.org/ckfinder/userfiles/files/26344237796.pdf
- http://busangh.com/attfile/fckimg/file///202109044851_239730008.pdf
- http://studiobardinisrl.com/userfiles/files/jebugotuwosutimerufijuf.pdf
- https://lbjgold.in/ckfinder/userfiles/files/31282718796.pdf
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/26b991188d018853608f407b9594032c/11159871524.pdf
- http://poliinc.com/upload/files/10493220263.pdf
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/161309290eb305---25482530462.pdf
- http://soojuspilt.ee/files/file/36193999472.pdf
- https://keralatemples.info/ckfinder/userfiles/files/guwet.pdf
- https://stop-remont.ru/ckfinder/userfiles/files/99630242543.pdf
- http://seosanhrd.com/userfiles/file/66537712403.pdf
- http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/virarofuxemev.pdf
- https://zd-zeta.com/uploads/files/202109061354305096.pdf
- https://saintarseny.ca/sites/saintarseny.ca/files/file/48604681205.pdf
- http://dreamscar.eu/userfiles/file/67750956026.pdf
- http://mos-craciun-inchiriere.ro/fckfiles/file/53206274452.pdf
- https://telliogluhukuk.com/userfiles/file/vebonejebibopiluwe.pdf
- https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131519caa192---17869873404.pdf
- http://merrygoldholidays.com/ckfinder/userfiles/files/70829299655.pdf
- https://fetogram.com/images/upload/files/sukafodubodesasategoli.pdf
- http://lovelyspa.net/ckfinder/userfiles/files/fafidowasijufirepe.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_off0000c79b.bine8a106ba766734ac3356efbf1d8186a26b211b4913f9256cb197c89875a533a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC79B | 10236 bytes |
font_01_sfnt_off0000deb9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEB9 | 16792 bytes |
font_02_sfnt_off0000f6cb.bin71868ce25058b31fbc01205bc724219e1b74a9d41a3b1de0df284da560199451 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6CB | 19216 bytes |
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